`check_syntax` command is skipped in PRs changing Enso codebase.

[farmaazon]

Part of the rust Lint on CI is calling check_syntax against the entire enso codebase in our repository: here is an example of it failing: https://github.com/enso-org/enso/actions/runs/12867080365/job/35870986797?pr=12083#step:9:634

It depends on enso files, but is not run in PRs changing those: https://github.com/enso-org/enso/actions/runs/12831871200/job/35783310246

Probably should not be a part of WASM lint, but a step run when rust or enso code changes.