flutter/engine#35707 changed a .py file, but Linux Android clang-tidy did not run in presubmit even though that builder has a runIf - "**.py" pattern:

https://github.com/flutter/engine/blob/3aa112c75ccba5a6064f45243e6cd84ddf220357/.ci.yaml#L243-L254

Lint errors weren't caught in presubmit, so the PR was reverted.
Why didn't the builder run in presubmit: https://github.com/flutter/engine/pull/35707/checks
Is something malformed in the .ci.yaml?

@godofredoc