feat(playwright): Remove Cypress auth tests in favor of Playwright auth tests (#35938)

Co-authored-by: Claude <noreply@anthropic.com>

.github/workflows/superset-playwright.yml

@@ -1,4 +1,4 @@
-name: Playwright E2E Tests
+name: Playwright Experimental Tests
 
 on:
   push:
@@ -23,9 +23,10 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  playwright-tests:
+  # NOTE: Required Playwright tests are in superset-e2e.yml (E2E / playwright-tests)
+  # This workflow contains only experimental tests that run in shadow mode
+  playwright-tests-experimental:
     runs-on: ubuntu-22.04
-    # Allow workflow to succeed even if tests fail during shadow mode
     continue-on-error: true
     permissions:
       contents: read
@@ -117,13 +118,13 @@ jobs:
         uses: ./.github/actions/cached-dependencies
         with:
           run: playwright-install
-      - name: Run Playwright
+      - name: Run Playwright (Experimental Tests)
         if: steps.check.outputs.python || steps.check.outputs.frontend
         uses: ./.github/actions/cached-dependencies
         env:
           NODE_OPTIONS: "--max-old-space-size=4096"
         with:
-          run: playwright-run ${{ matrix.app_root }}
+          run: playwright-run "${{ matrix.app_root }}" experimental/
       - name: Set safe app root
         if: failure()
         id: set-safe-app-root
@@ -138,4 +139,4 @@ jobs:
           path: |
             ${{ github.workspace }}/superset-frontend/playwright-results/
             ${{ github.workspace }}/superset-frontend/test-results/
-          name: playwright-artifact-${{ github.run_id }}-${{ github.job }}-${{ matrix.browser }}--${{ steps.set-safe-app-root.outputs.safe_app_root }}
+          name: playwright-experimental-artifact-${{ github.run_id }}-${{ github.job }}-${{ matrix.browser }}--${{ steps.set-safe-app-root.outputs.safe_app_root }}