Add empty context menu (#8519)

* Add empty context menu

- For tables without "row actions"
- Show an "empty" menu
- For UX consistency across all tables

* Fix for playwright tests

- Recent changes to the demo dataset...

* Fix typo

docs/docs/develop/react-frontend.md

@@ -125,7 +125,7 @@ npx playwright show-report path/to/report
 
 ### No Tests Found
 
-If there is any problem in the testing launch sequence, the playwright UI will display the message "No Tests". In this case, an error has occured, likely launching the InvenTree server process (which runs in the background).
+If there is any problem in the testing launch sequence, the playwright UI will display the message "No Tests". In this case, an error has occurred, likely launching the InvenTree server process (which runs in the background).
 
 To debug this situation, and determine what error needs to be resolved, run the following command:
 

src/frontend/src/tables/InvenTreeTable.tsx

@@ -590,6 +590,8 @@ export function InvenTreeTable<T extends Record<string, any>>({
         disabled: action.disabled
       }));
       return showContextMenu(items)(event);
+    } else {
+      return showContextMenu([])(event);
     }
   };
 

src/frontend/tests/pages/pui_part.spec.ts

@@ -112,7 +112,7 @@ test('Parts - Allocations', async ({ page }) => {
 
   // Check that the overall allocations are displayed correctly
   await page.getByText('11 / 825').waitFor();
-  await page.getByText('6 / 110').waitFor();
+  await page.getByText('5 / 109').waitFor();
 
   // Navigate to the "Allocations" tab
   await page.getByRole('tab', { name: 'Allocations' }).click();