Explicitly wrap if condition with operator in `${{ }}`.
Explicitly wrap if condition with operator in `${{ }}`.

As documented [here](https://docs.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions#about-contexts-and-expressions).

RELNOTES=n/a
PiperOrigin-RevId: 363937045

google/jimfs,google/jimfs