## Summary

This PR updates Ruff to **not** generate auto-fixes if the source code
contains syntax errors as determined by the parser.

The main motivation behind this is to avoid infinite autofix loop when
the token-based rules are run over any source with syntax errors in
#11950.

Although even after this, it's not certain that there won't be an
infinite autofix loop because the logic might be incorrect. For example,
#12094 and
#12136.

This requires updating the test infrastructure to not validate for fix
availability status when the source contained syntax errors. This is
required because otherwise the fuzzer might fail as it uses the test
function to run the linter and validate the source code.

resolves: #11455 

## Test Plan

`cargo insta test`