Mac dart_plugin_registry_test flaky, times out during "Wait for registry execution" #76837
Description
[dart_plugin_registry_test] [STDOUT] ════════════════════╡ ••• Wait for registry execution ••• ╞═════════════════════
...
[dart_plugin_registry_test] [STDOUT] stdout: [ +12 ms] ♦ codesign --force --verbose --sign - -- /opt/s/w/ir/tmp/t/flutter_devicelab_dart_plugin_test.jme1HM/app/build/macos/Build/Products/Debug/app.app/Contents/Frameworks/FlutterMacOS.framework/FlutterMacOS
[dart_plugin_registry_test] [STDERR] Task failed: TimeoutException after 0:01:00.000000: Future not completed
[dart_plugin_registry_test] [STDERR]
[dart_plugin_registry_test] [STDERR] Stack trace:
[dart_plugin_registry_test] [STDERR] dart:async _asyncErrorWrapperHelper
[dart_plugin_registry_test] [STDERR] package:flutter_devicelab/framework/framework.dart _TaskRunner._performTask.<fn>
[dart_plugin_registry_test] [STDERR] package:stack_trace Chain.capture
[dart_plugin_registry_test] [STDERR] package:flutter_devicelab/framework/framework.dart 217:11 _TaskRunner._performTask
[dart_plugin_registry_test] [STDERR] package:flutter_devicelab/framework/framework.dart 120:41 _TaskRunner.run
https://logs.chromium.org/logs/flutter/buildbucket/cr-buildbucket.appspot.com/8854293089405459488/+/steps/run_dart_plugin_registry_test/0/stdout
https://logs.chromium.org/logs/flutter/buildbucket/cr-buildbucket.appspot.com/8854292463272607824/+/steps/run_dart_plugin_registry_test/0/stdout
https://logs.chromium.org/logs/flutter/buildbucket/cr-buildbucket.appspot.com/8854274764079865584/+/steps/run_dart_plugin_registry_test/0/stdout
Introduced in #74469
flutter/dev/devicelab/lib/tasks/dart_plugin_registry_tests.dart
Lines 161 to 163 in b7d4806