chore: simplify embedded frontend UI (#4326)

Author: korniltsev

.github/workflows/e2e.yaml

@@ -69,17 +69,3 @@ jobs:
       - run: yarn --frozen-lockfile
       - name: Run build
         run: yarn build
-  test:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-        with:
-          persist-credentials: 'false'
-      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
-        with:
-          node-version: 20
-          cache: yarn
-      - run: yarn --frozen-lockfile
-      - name: Run tests
-        run: yarn test