test: add getWorkflowStageDetails and workflow request field label coverage

- Unit-test getWorkflowStageDetails postMessage payload and fallbacks
- Integration-style tests for request/pending copy, tooltip classes, and OPEN_REQUEST_EDIT_ACCESS
- Extend fieldLabelWrapper mock styles for workflow tooltip variants
- Fix visualBuilder.style mock path (../../../) so class assertions match mocked labels

Made-with: Cursor

Author: hitesh-shetty-cstk

src/visualBuilder/components/__test__/fieldlabelwrapper/fieldLabelWrapper.mocks.ts

@@ -20,6 +20,11 @@ export const mockStyles = {
     "visual-builder__tooltip--persistent":
         "visual-builder__tooltip--persistent",
     "visual-builder__custom-tooltip": "visual-builder__custom-tooltip",
+    "visual-builder__custom-tooltip--below": "visual-builder__custom-tooltip--below",
+    "visual-builder__custom-tooltip--workflow-access":
+        "visual-builder__custom-tooltip--workflow-access",
+    "visual-builder__tooltip--persistent--below":
+        "visual-builder__tooltip--persistent--below",
     "visual-builder__focused-toolbar__field-label-wrapper":
         "visual-builder__focused-toolbar__field-label-wrapper",
     "visual-builder__focused-toolbar--field-disabled":