Shutdown hooks shouldn't crash the tool #57351
Description
We should probably handle a shutdown hook that throws an exception similarly to how we handle exceptions from signal handlers. See shutdown hook processing here:
https://github.com/flutter/flutter/blob/master/packages/flutter_tools/lib/src/base/process.dart#L118
and signal handler processing here:
https://github.com/flutter/flutter/blob/master/packages/flutter_tools/lib/src/base/signals.dart#L134
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Important issues not at the top of the work listA truly polished experienceTeam-specific productivity, code health, technical debt.Technical debt, code quality, testing, etc.Owned by Flutter Tool teamAffects the "flutter" command-line tool. See also t: labels.Issues that have been deemed still valid as part of the Flutter Tools issue cleanup initiative.