microbenchmarks_ios timing out ~40% of the time, white screen #76163
Description
The runner is not progressing from:
[microbenchmarks_ios] [STDOUT] [ +58 ms] Successfully connected to service protocol: http://127.0.0.1:53924/
[microbenchmarks_ios] [STDOUT] [ +14 ms] Application running.
[microbenchmarks_ios] [STDOUT] [ +5 ms] Connected to iPhone
[microbenchmarks_ios] [STDOUT] [ +2 ms] Flutter run key commands.
[microbenchmarks_ios] [STDOUT] [ +1 ms] h Repeat this help message.
[microbenchmarks_ios] [STDOUT] [ ] c Clear the screen
[microbenchmarks_ios] [STDOUT] [ ] q Quit (terminate the application on the device).
[microbenchmarks_ios] [STDOUT] [ ] An Observatory debugger and profiler on iPhone is available at: http://127.0.0.1:53927/7vUpRFk2E18=/
Split off from #75851, which will track the task never being killed.