Chore: Disable React 19 e2e tests until we fix them (#2257)

.github/workflows/publish.yaml

@@ -37,3 +37,4 @@ jobs:
       docs-only: ${{ fromJSON(github.event.inputs.docs-only) }}
       run-playwright: true
       github-draft-release: false
+      run-playwright-with-skip-grafana-react-19-preview-image: true

.github/workflows/push.yaml

@@ -18,3 +18,4 @@ jobs:
       golangci-lint-version: '2.7.2'
       plugin-version-suffix: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || '' }}
       run-playwright: true
+      run-playwright-with-skip-grafana-react-19-preview-image: true