Help us understand the severity of this issue

• breakage; unable to contribute or trigger builds will no workarounds
• inconvenient workarounds exist, but significant effort required
• needed for a Flutter team-wide priority (already agreed upon)
• nice-to-have; none of the above

What do you need help with

Example failures

1. https://ci.chromium.org/ui/p/flutter/builders/try/Mac_x64%20build_all_packages%20stable/25240/overview
2. https://ci.chromium.org/ui/p/flutter/builders/try/Mac_arm64%20custom_package_tests%20master/24378/overview
3. https://ci.chromium.org/ui/p/flutter/builders/try/Mac_arm64%20custom_package_tests%20master/24375/overview
4. https://ci.chromium.org/ui/p/flutter/builders/try/Mac_arm64%20custom_package_tests%20master/24374/overview
5. https://ci.chromium.org/ui/p/flutter/builders/try/Mac_arm64%20custom_package_tests%20stable/24364/overview
6. https://ci.chromium.org/ui/p/flutter/builders/try/Mac_arm64%20ios_platform_tests_shard_1%20master/24643/overview
7. https://ci.chromium.org/ui/p/flutter/builders/try/Mac_arm64%20ios_platform_tests_shard_2%20master/24625/overview
8. http://ci.chromium.org/ui/p/flutter/builders/try/Mac_arm64%20ios_platform_tests_shard_3%20master/24694/overview
9. https://ci.chromium.org/ui/p/flutter/builders/try/Mac_arm64%20ios_platform_tests_shard_4%20master/24616/overview
10. https://ci.chromium.org/ui/p/flutter/builders/try/Mac_arm64%20ios_platform_tests_shard_5%20master/24708/overview
11. https://ci.chromium.org/ui/p/flutter/builders/try/Mac_arm64%20macos_platform_tests%20master%20-%20packages/24746/overview
12. https://ci.chromium.org/ui/p/flutter/builders/try/Mac_x64%20ios_build_all_packages%20stable/20210/overview

Root pr https://github.com/flutter/packages/pull/10201/checks?check_run_id=52612049728