felt ios-safari test is flaky because an iOS simulator could not be started. #94766
Description
An instance of the failure is here on this patches presubmit.
The stack trace is:
Unhandled exception:
Exception: Failed to boot iOS simulators with id: 0E7178C3-FD7C-471E-983C-686C3AE87248.
#0 IosSimulator.boot (package:simulators/simulator_manager.dart:212:7)
<asynchronous suspension>
#1 initIosSimulator (file:///opt/s/w/ir/cache/builder/src/flutter/lib/web_ui/dev/safari_installation.dart:56:5)
<asynchronous suspension>
#2 SafariIosEnvironment.prepare (file:///opt/s/w/ir/cache/builder/src/flutter/lib/web_ui/dev/safari_ios.dart:32:5)
<asynchronous suspension>
#3 RunTestsStep.run (file:///opt/s/w/ir/cache/builder/src/flutter/lib/web_ui/dev/steps/run_tests_step.dart:80:5)
<asynchronous suspension>
#4 Pipeline.run (file:///opt/s/w/ir/cache/builder/src/flutter/lib/web_ui/dev/pipeline.dart:128:9)
<asynchronous suspension>
#5 TestCommand.run (file:///opt/s/w/ir/cache/builder/src/flutter/lib/web_ui/dev/test_runner.dart:156:5)
<asynchronous suspension>
#6 CommandRunner.runCommand (package:args/command_runner.dart:209:13)
<asynchronous suspension>
#7 main (file:///opt/s/w/ir/cache/builder/src/flutter/lib/web_ui/dev/felt.dart:43:26)
<asynchronous suspension>