applyImpulse after setParent no longer works [BUG]

**What were you trying to do, what did you expect to happen?**
When I call `applyImpulse` after calling `setParent` to undefined, I expected the impulse to be applied.

**What actually happened?**
The impulse was not applied.

**To Reproduce**
On hytopia SDK 0.10.37, call `setParent` with undefined and call `applyImpulse()`

**Additional context**
This worked in the prior SDK version
