### Tested versions

- First reproducible in: v4.2.dev5.official [e3e2528ba]
- Reproducible in: v4.2.stable.official [46dc27791], v4.2.dev5.official [e3e2528ba], v4.2.dev6.official [57a6813bb]
- Not reproducible in: v4.1.3.stable.official [f06b6836a], v4.2.dev1.official [0c2144da9], v4.2.dev2.official [da81ca62a], v4.2.dev3.official [013e8e3af], v4.2.dev4.official [549fcce5f]

### System information

Godot v4.2.stable - Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1080 (NVIDIA; 31.0.15.4617) - Intel(R) Core(TM) i5-8600K CPU @ 3.60GHz (6 Threads)

### Issue description

The `TileSet` `set_occlusion_layer_light_mask` method does not properly update the `TileSet`'s light mask, causing shadows to still be cast by the `TileSet` even when the light mask is changed using the method to a mask different from a given light source (or even an empty light mask). In v4.1.3.stable.official [f06b6836a] this method was working properly.

### Steps to reproduce

- Download and open the `MRPSetOcclusionLayerTileSet_4.2-stable` project folder using one of the reproducible Godot versions noted above.
- Run the project, and press the spacebar key. This will toggle the occlusion layer light mask value of the on-screen `TileMap`'s `TileSet` occlusion light mask between 0 and 1. You will see that the `TileMap` still casts shadows regardless of the new value of its `TileSets`'s occlusion layer light mask.

### Minimal reproduction project (MRP)

[MRPSetOcclusionLayerTileSetBug.zip](https://github.com/godotengine/godot/files/13592741/MRPSetOcclusionLayerTileSetBug.zip)

return tile_set;
}
void TileMap::set_rendering_quadrant_size(int p_size) {
	ERR_FAIL_COND_MSG(p_size < 1, "TileMapQuadrant size cannot be smaller than 1.");
	rendering_quadrant_size = p_size;
	for (Ref<TileMapLayer> &layer : layers) {
		layer->notify_tile_map_change(TileMapLayer::DIRTY_FLAGS_TILE_MAP_QUADRANT_SIZE);
	}
	emit_signal(CoreStringNames::get_singleton()->changed);
}
int TileMap::get_rendering_quadrant_size() const {
	return rendering_quadrant_size;
}
void TileMap::draw_tile(RID p_canvas_item, const Vector2 &p_position, const Ref<TileSet> p_tile_set, int p_atlas_source_id, const Vector2i &p_atlas_coords, int p_alternative_tile, int p_frame, Color p_modulation, const TileData *p_tile_data_override, real_t p_animation_offset) {
	ERR_FAIL_COND(!p_tile_set.is_valid());
	ERR_FAIL_COND(!p_tile_set->has_source(p_atlas_source_id));
	ERR_FAIL_COND(!p_tile_set->get_source(p_atlas_source_id)->has_tile(p_atlas_coords));
	ERR_FAIL_COND(!p_tile_set->get_source(p_atlas_source_id)->has_alternative_tile(p_atlas_coords, p_alternative_tile));
	TileSetSource *source = *p_tile_set->get_source(p_atlas_source_id);
	TileSetAtlasSource *atlas_source = Object::cast_to<TileSetAtlasSource>(source);
	if (atlas_source) {
		
		if (p_frame >= 0) {
			ERR_FAIL_INDEX(p_frame, atlas_source->get_tile_animation_frames_count(p_atlas_coords));
		}