Repro steps:
1. Open Scene1 from attached project.
2. Press Play
3. Press the Space button to stop the particles
4. Observe how the particles are stopped and cleared, but the lights have remained.

Expected outcome:
Lights to be cleared when the particles are cleared.

Note:
- Not a regression, happens in 5.5, new feature not available before 5.5
- Using both Stop() and Clear()