[stable] [deps] Roll jsshell & firefox to newer version

Issue:
  Firefox performs more strict validation when enabling the `js-string`
  builtin. Namely it requires the wasm array to `fromCharCodeArray` to be
  nullable (as per-spec), where D8 is more lenient and allows non-nullable
  wasm array just fine.

  In principle it shouldn't be nullable as passing a null will make the
  function trap at runtime. But the spec says it should be nullable and if
  it isn't, Firefox will fail validation.

  Soon Chrome will start enforcing this.

Fix:
  Import the function with a nullable wasm array type as parameter.

Why Cherry-pick:
  Apps compiled with dart2wasm will no longer work with newer Chrome
  (once they roll out stricter validation).

Risk: Low

Issue #59899

Cherry-pick: https://dart-review.googlesource.com/c/sdk/+/404300
Change-Id: Icde5eccfdc2cf1e4666be6c670105b896b1a19a7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/413440
Commit-Queue: Martin Kustermann <[email protected]>
Reviewed-by: Alexander Thomas <[email protected]>

Author: mkustermann

CHANGELOG.md

@@ -1,3 +1,13 @@
+## 3.7.2
+
+This is a patch release that:
+
+ - Fixes a bug in dart2wasm that imports a `js-string` builtin function with a
+   non-nullable parameter type where it must use a nullable one (issue [#59899]).
+
+[#59899]: https://github.com/dart-lang/sdk/issues/59899
+
+
 ## 3.7.1
 **Released on:** 2025-02-26
 

DEPS

@@ -72,7 +72,7 @@ vars = {
   # instructions. d8, the V8 shell, is always checked out.
   "checkout_javascript_engines": False,
   "d8_tag": "version:13.3.255",
-  "jsshell_tag": "version:133.0",
+  "jsshell_tag": "version:134.0",
   "jsc_tag": "version:287397",
 
   # https://chrome-infra-packages.appspot.com/p/fuchsia/third_party/clang
@@ -182,7 +182,7 @@ vars = {
   "download_chrome": False,
   "chrome_tag": "132.0.6834.57",
   "download_firefox": False,
-  "firefox_tag": "133.0.3",
+  "firefox_tag": "134.0",
 
   # Emscripten is used in dart2wasm tests.
   "download_emscripten": False,

sdk/lib/_internal/wasm/lib/js_helper_patch.dart

@@ -61,7 +61,7 @@ String jsStringToDartString(JSStringImpl jsString) {
 
 @pragma("wasm:import", "wasm:js-string.fromCharCodeArray")
 external WasmExternRef _jsStringFromCharCodeArray(
-  WasmArray<WasmI16> array,
+  WasmArray<WasmI16>? array,
   WasmI32 start,
   WasmI32 end,
 );