### 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)

p_list->push_back(PropertyInfo(Variant::INT, "format", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NO_EDITOR | PROPERTY_USAGE_INTERNAL));
	p_list->push_back(PropertyInfo(Variant::NIL, "Layers", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_GROUP));
#define MAKE_LAYER_PROPERTY(m_type, m_name, m_hint)                                                                                                                                                      \
	{                                                                                                                                                                                                    \
		const String property_name = vformat("layer_%d/" m_name, i);                                                                                                                                     \
		p_list->push_back(PropertyInfo(m_type, property_name, PROPERTY_HINT_NONE, m_hint, (get(property_name) == property_get_revert(property_name)) ? PROPERTY_USAGE_EDITOR : PROPERTY_USAGE_DEFAULT)); \
	}
	for (unsigned int i = 0; i < layers.size(); i++) {
		MAKE_LAYER_PROPERTY(Variant::STRING, "name", "");
		MAKE_LAYER_PROPERTY(Variant::BOOL, "enabled", "");
		MAKE_LAYER_PROPERTY(Variant::COLOR, "modulate", "");
		MAKE_LAYER_PROPERTY(Variant::BOOL, "y_sort_enabled", "");
		MAKE_LAYER_PROPERTY(Variant::INT, "y_sort_origin", "suffix:px");
		MAKE_LAYER_PROPERTY(Variant::INT, "z_index", "");
		MAKE_LAYER_PROPERTY(Variant::BOOL, "navigation_enabled", "");
		p_list->push_back(PropertyInfo(Variant::OBJECT, vformat("layer_%d/tile_data", i), PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NO_EDITOR));
	}
#undef MAKE_LAYER_PROPERTY
}
bool TileMap::_property_can_revert(const StringName &p_name) const {