Limit the use of the same shortcut name when adding a shortcut- added test cases

Signed-off-by: AmbrishRamachandiran <ambrish.r@infosys.com>

plugins/shortcuts/src/ShortcutForm.test.tsx

@@ -40,6 +40,9 @@ describe('ShortcutForm', () => {
       expect(
         screen.getByText('Must be at least 2 characters'),
       ).toBeInTheDocument();
+      expect(
+        screen.getByText('This title name is already exist'),
+      ).toBeInTheDocument();
     });
   });