[TRACKER] Raster occlusion culling issues

[Calinou]

This is a tracker for issues related to raster occlusion culling (the kind of Embree-based occlusion culling used in 4.0).

This tracker does not list issues related to portals and rooms occlusion culling, or geometry occlusion culling featured in 3.x.

See also https://github.com/godotengine/godot/issues/57416, which is another common optimization used in 3D rendering.

### Bugs
- [ ] https://github.com/godotengine/godot/issues/53288
- [ ] https://github.com/godotengine/godot/issues/63771
- [ ] https://github.com/godotengine/godot/issues/70373
- [ ] https://github.com/godotengine/godot/issues/70375
- [x] https://github.com/godotengine/godot/issues/70516
- [ ] https://github.com/godotengine/godot/issues/91030

### Enhancements
- [ ] https://github.com/godotengine/godot/issues/50154
- [ ] https://github.com/godotengine/godot-proposals/issues/2910
- [ ] https://github.com/godotengine/godot-proposals/issues/3932
- [ ] https://github.com/godotengine/godot-proposals/issues/2911

[Flarkk]

See #99941