Level Bounds Incorrectly Calculated If Particle System Does Not Have "Use Fixed Relative Bounding Box" Enabled

If "Use Relative Fixed Bounding Box" is disabled, level bounds will be incorrectly calculated. This seems to be similar to [Link Removed].

Found in 4.19 CL# 4033788, 4.20 CL# 4212847, 4.21 CL# 4233289

1. Open the editor
2. Create a new empty level
3. Create a particle system
4. Set the view port to Top Orthographic
5. Place a level bounds into the level
6. Place the particle system at X: 2000, Y: -2000, Z: 0
7. Select the level bounds

Results:
The level bounds seems to include world origin along with the particle system

Expected:
The level bounds would only surround the particle system placed in the level 

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