Unable to perform right-click anywhere under stepping thread group

### Expected behavior

Expected: I should be able to right-click on thread group to utilize some function like disable/enable

### Actual behavior

Actual: Unable to perform right-click anywhere under stepping thread group

### Steps to reproduce the problem

1. Launch jmeter
2. Open jmx file
3. Try right-click anywhere under stepping thread group

### JMeter Version

5.6.3

### Java Version

openjdk version 17

### OS Version

MacOS Version 15.3.1 (24D70)