Paintings are not unloaded when removing a Texture Pack

Verification builds:
#332621

Summary:
Unloading a texture pack containing new paintings do not unload paintings (resulting in vanilla textures with previous texture pack paintings)

Impact:
The result is weird but do not impact content. It's more a weird side effect which disapears when game is relaunched.

Repro Steps:
1. Load texture pack with paintings
2. Load a world and place some paintings
3. Save & Quit world
4. Unload texture pack
5. Reload world

Observed Results:
Paintings in world are still the ones from texture pack but all textures are back to vanilla ones

Expected Results:
Paintings in world should be back to vanilla ones

Screenshots/Videos attached: No

Notes:
Same bug with font