Mark dartdev/test/* as Slow, Pass in pkg/pkg.status file

Change-Id: I290e6792b515a64cb275af5e3def3efa9bd01734
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/143285
Reviewed-by: Jaime Wren <[email protected]>
Commit-Queue: Jaime Wren <[email protected]>
Auto-Submit: Jaime Wren <[email protected]>

Author: jwren

pkg/pkg.status

@@ -117,6 +117,7 @@ analyzer/test/src/task/strong/front_end_inference_test: Slow, Pass
 analyzer/test/src/task/strong/inferred_type_test: Slow, Pass
 analyzer_plugin/test/src/utilities/change_builder/change_builder_dart_test: Slow, Pass
 analyzer_plugin/test/src/utilities/completion/optype_test: Slow, Pass
+dartdev/test/*: Slow, Pass
 mutation_observer: Skip # Skip tests on the VM if the package depends on dart:html
 
 [ $runtime != vm ]