VR: Update to latest OpenXR (and Silk.NET AssImp), may fix validation…

… error

Bump to v4.6.6

Bump to v4.5.3

Bump version to v3.8.5

[Core] List comparison can use for loop instead of iterator

Physics: fix collider mesh generation helper function

Remove Update override

PostProcessing: fix for Bright Filter and Color Transforms

vulkan: hopefully the last bit of synchronization needed for full sta…

…bility!

add GridList to manage selectable UI lists easily, bump version to 3.3.1