Properly declare inputs and output for buildClient (#2086)

Co-authored-by: samfreund <samf.236@proton.me>

.github/workflows/lint-format.yml

@@ -83,15 +83,3 @@ jobs:
         run: pnpm run lint-ci
       - name: Check Formatting
         run: pnpm run format-ci
-  server-index:
-    name: "Check server index.html not changed"
-    runs-on: ubuntu-22.04
-    steps:
-      - uses: actions/checkout@v4
-      - name: Fetch all history and metadata
-        run: |
-          git fetch --prune --unshallow
-          git checkout -b pr
-          git branch -f main origin/main
-      - name: Check index.html not changed
-        run: git --no-pager diff --exit-code origin/main photon-server/src/main/resources/web/index.html