Unrelated classes show up in contexzt menu for creating an action

**Describe the bug**
A report has been received where:
Context menus show CreateAction nodes for classes unrelated to UAction

**To Reproduce**
Needs investigating.

**[Optional] Screenshots if any**
If applicable, add screenshots or videos to help explain your problem.

**Environment (please complete the following information):**
 - Engine Version: 5.7
 - Plugin Version: 1.2
 - OS: Windows
