Required GitHub workflows shouldn't use path filtering/branch filtering

[weikequ]

Describe the bug Currently, path filtering is used in ci.yaml to make sure that docs only PRs don't trigger the full suite of end to end tests. Since implementation, the guidance from GitHub's docs regarding this has changed and now recommends against using path filtering/branch filtering/commit message filtering for require workflows.

Steps to reproduce Open .github/workflows/ci.yaml

Expected behavior The page now recommends using conditionals to handle this (as skipped conditionals will report correctly on PR checks)