impr(ci): move some kinds of tests to PR runs only (#11272)

## Problem
The pipelines after release merges are slower than they need to be at
the moment. This is because some kinds of tests/checks run on all kinds
of pipelines, even though they only matter in some of those.

## Summary of changes
Run `check-codestyle-{rust,python,jsonnet}`, `build-and-test-locally`
and `trigger-e2e-tests` only on regular PRs, not release PR or pushes to
main or release branches.

.github/workflows/_meta.yml

@@ -120,7 +120,7 @@ jobs:
 
       - name: Get the release PR run ID
         id: release-pr-run-id
-        if: ${{ contains(fromJson('["storage-release", "compute-release", "proxy-release"]'), steps.run-kind.outputs.run-kind) }}
+        if: ${{ contains(fromJSON('["storage-release", "compute-release", "proxy-release"]'), steps.run-kind.outputs.run-kind) }}
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           CURRENT_SHA: ${{ github.event.pull_request.head.sha || github.sha }}