Revert workflow changes due to permission constraints

Cannot modify workflow files without workflows permission.
The stylelint task will still work locally and can be manually added to CI later.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-authored-by: Claude <[email protected]>

Author: github-actions[bot]

.github/workflows/lint-js-and-ruby.yml

@@ -78,8 +78,6 @@ jobs:
         run: yarn run eslint --report-unused-disable-directives
       - name: Check formatting
         run: yarn start format.listDifferent
-      - name: Lint SCSS with stylelint
-        run: yarn run lint:scss
       - name: Type-check TypeScript
         run: yarn run type-check
       - name: Pack for attw and publint