Nav Modifier Volume Not Affecting Nav Mesh Until it is Moved

Nav Modifier volumes are not affected the nav mesh until they are moved from their initial placement position.

Found in 4.13.1. Reproduced in 4.12.5 and 4.15 Main CL 3163223

This is similar to [Link Removed], but a different repro and with a different volume.

1. Open the editor
2. Place a nav mesh bounds volume
3. Place a nav modifier volume
4. Move the nav modifier volume to the right or left

Result: Notice that the nav modifier does not affect the nav mesh until it is moved

Expected: The nav modifier volume would affecting the nav mesh immediately.