Failures on Add tests for proposed version 2.32 changes to patterns.

There are new test failures on [Add tests for proposed version 2.32 changes to patterns.](https://dart-review.googlesource.com/c/sdk/+/300320).

The tests
```
language/patterns/version_2_32_changes_error_test MissingCompileTimeError (expected Pass)
```
are failing on configurations
```
analyzer-asserts-linux
cfe-strong-linux
cfe-weak-linux
```