CI failing in autocomplete tests with "Finder specifies a widget that would not receive pointer events."

[chrisbobbe]

CI is failing with this test failure:

00:21 +1751 ~166: /Users/chrisbobbe/dev/zulip-flutter/test/widgets/autocomplete_test.dart: TopicAutocomplete text selection is reset on choosing an option
══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞════════════════════════════════════════════════════
The following assertion was thrown running a test:
Finder specifies a widget that would not receive pointer events.
A call to tap() with finder "Found 1 widget with text "some topic": [
  Text("some topic", dependencies: [DefaultSelectionStyle, DefaultTextStyle, MediaQuery]),
]" derived an Offset (Offset(400.0, 484.0)) that would not hit test on the specified widget.
Maybe the widget is actually off-screen, or another widget is obscuring it, or the widget cannot
receive pointer events.
The finder corresponds to this RenderBox: RenderParagraph#2bd19 relayoutBoundary=up24(creator: RichText ← Text ← Padding ← Listener ← RawGestureDetector ← GestureDetector ← Semantics ← DefaultSelectionStyle ← Builder ← MouseRegion ← Semantics ← _FocusInheritedScope ← ⋯, parentData: offset=Offset(16.0, 8.0) (can use size), constraints: BoxConstraints(w=736.0, 0.0<=h<=Infinity), size: Size(736.0, 20.0), textAlign: start, textDirection: ltr, softWrap: wrapping at box width, overflow: clip, locale: en, maxLines: unlimited)
The hit test result at that offset is: HitTestResult(RenderEditable#8d1e5@Offset(384.0, 20.0),
_RenderSizeChangedWithCallback#69182@Offset(384.0, 20.0),
RenderSemanticsAnnotations#2c1d7@Offset(384.0, 20.0), RenderLeaderLayer#c01d0@Offset(384.0, 20.0),
RenderIgnorePointer#a7fdc@Offset(384.0, 20.0), RenderSemanticsAnnotations#bb095@Offset(384.0, 20.0),
RenderPointerListener#23002@Offset(384.0, 20.0), RenderPointerListener#f94cb@Offset(384.0, 20.0),
RenderMouseRegion#36561@Offset(384.0, 20.0), RenderTapRegion#0668a@Offset(384.0, 20.0),
_RenderCompositionCallback#c7f37@Offset(384.0, 20.0), RenderRepaintBoundary#d60f4@Offset(384.0,
20.0), _RenderDecoration#9edf7@Offset(384.0, 20.0), RenderPointerListener#dc621@Offset(384.0, 20.0),
RenderSemanticsAnnotations#9100f@Offset(384.0, 20.0), RenderIgnorePointer#a9951@Offset(384.0, 20.0),
RenderTapRegion#59981@Offset(384.0, 20.0), RenderMouseRegion#b09e2@Offset(384.0, 20.0),
RenderPadding#1c599@Offset(384.0, 30.0), RenderDecoratedBox#226f9@Offset(384.0, 30.0),
RenderLeaderLayer#988f5@Offset(384.0, 30.0), RenderSemanticsAnnotations#4e7d4@Offset(384.0, 30.0),
RenderTapRegion#64502@Offset(384.0, 30.0), _RenderLayoutSurrogateProxyBox#a8cbf@Offset(384.0, 30.0),
_RenderLayoutBuilder#46d79@Offset(384.0, 30.0), RenderFlex#7f798@Offset(384.0, 30.0),
RenderPadding#88ffc@Offset(392.0, 30.0), RenderFlex#70c4b@Offset(392.0, 30.0),
RenderPadding#1047a@Offset(400.0, 30.0), RenderFlex#f84b6@Offset(400.0, 30.0),
_RenderInkFeatures#f39ea@Offset(400.0, 30.0), RenderPhysicalModel#b97f6@Offset(400.0, 30.0),
RenderPadding#5469c@Offset(400.0, 31.0), RenderDecoratedBox#01f41@Offset(400.0, 31.0),
RenderConstrainedBox#d7156@Offset(400.0, 31.0), RenderFlex#52c8e@Offset(400.0, 424.0),
RenderPositionedBox#c341e@Offset(400.0, 424.0), RenderCustomMultiChildLayoutBox#6348e@Offset(400.0,
484.0), _RenderInkFeatures#1fc31@Offset(400.0, 484.0), RenderPhysicalModel#75f88@Offset(400.0,
484.0), RenderSemanticsAnnotations#ee610@Offset(400.0, 484.0),
RenderRepaintBoundary#623e2@Offset(400.0, 484.0), RenderIgnorePointer#ed400@Offset(400.0, 484.0),
_RenderSnapshotWidget#c6e12@Offset(400.0, 484.0), _RenderSnapshotWidget#dc247@Offset(400.0, 484.0),
_RenderSnapshotWidget#c7c59@Offset(400.0, 484.0), _RenderSnapshotWidget#3a3c3@Offset(400.0, 484.0),
RenderRepaintBoundary#e751b@Offset(400.0, 484.0), RenderSemanticsAnnotations#bfa1a@Offset(400.0,
484.0), RenderOffstage#83bb7@Offset(400.0, 484.0), RenderSemanticsAnnotations#d4b3f@Offset(400.0,
484.0), _RenderTheater#64caf@Offset(400.0, 484.0), RenderAbsorbPointer#e4729@Offset(400.0, 484.0),
RenderPointerListener#f0a2d@Offset(400.0, 484.0), RenderSemanticsAnnotations#e638b@Offset(400.0,
484.0), RenderCustomPaint#dac63@Offset(400.0, 484.0), RenderSemanticsAnnotations#c0b77@Offset(400.0,
484.0), RenderSemanticsAnnotations#b114e@Offset(400.0, 484.0),
RenderTapRegionSurface#c0116@Offset(400.0, 484.0), RenderSemanticsAnnotations#e1393@Offset(400.0,
484.0), RenderSemanticsAnnotations#98622@Offset(400.0, 484.0),
RenderSemanticsAnnotations#6e817@Offset(400.0, 484.0),
HitTestEntry<HitTestTarget>#0c033(_ReusableRenderView#5e431),
HitTestEntry<HitTestTarget>#ab8f1(<AutomatedTestWidgetsFlutterBinding>))
If you expected this target not to be able to receive pointer events, pass "warnIfMissed: false" to
"tap()".
To make this error into a non-fatal warning, set WidgetController.hitTestWarningShouldBeFatal to
false.

When the exception was thrown, this was the stack:
#0      WidgetController._getElementPoint (package:flutter_test/src/controller.dart:2045:11)
#1      WidgetController.getCenter (package:flutter_test/src/controller.dart:1861:12)
#2      WidgetController.tap (package:flutter_test/src/controller.dart:1041:7)
#3      main.<anonymous closure>.<anonymous closure> (file:///Users/chrisbobbe/dev/zulip-flutter/test/widgets/autocomplete_test.dart:338:20)
<asynchronous suspension>
#4      testWidgets.<anonymous closure>.<anonymous closure> (package:flutter_test/src/widget_tester.dart:193:15)
<asynchronous suspension>
#5      TestWidgetsFlutterBinding._runTestBody (package:flutter_test/src/binding.dart:1064:5)
<asynchronous suspension>
<asynchronous suspension>
(elided one frame from package:stack_trace)

The test description was:
  text selection is reset on choosing an option
════════════════════════════════════════════════════════════════════════════════════════════════════
00:21 +1752 ~166 -1: /Users/chrisbobbe/dev/zulip-flutter/test/widgets/autocomplete_test.dart: TopicAutocomplete text selection is reset on choosing an option [E]
  Test failed. See exception logs above.
  The test description was: text selection is reset on choosing an option

The failure is in a test we added recently: 'text selection is reset on choosing an option', and the fix will be the same as in 0bfa79d: add a tester.pump() to accommodate a new delay in upstream RawAutocomplete.

We merged this test in the short window between the revert and reland of that RawAutocomplete change, so our CI didn't catch this failure before merge.

[PIG208]

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