### Godot version

4.2

### System information

Godot v4.2.stable - Windows 10.0.19045 - Vulkan (Mobile) - dedicated AMD Radeon RX 6700 XT (Advanced Micro Devices, Inc.; 31.0.21001.45002) - AMD Ryzen 5 3600 6-Core Processor (12 Threads)

### Issue description

Tiles with light occluders still show shadows, when replacing them by code (set_cell) with a not occluding tile.
This does not happen when they are replaced with an empty cell (cell_id = -1) or erase_cell.

### Steps to reproduce

Make a new project with a Tilemap2D and a PointLight2D
Make 2 Tiles: One with an occluder and one without
Make the tiles placed by code.
Replace an occluding tile with a non occluding

### Minimal reproduction project

[TestForTilemap.zip](https://github.com/godotengine/godot/files/13539067/TestForTilemap.zip)

bool need_warning = true;
		for (const Ref<TileMapLayer> &layer : layers) {
			if (layer->is_y_sort_enabled()) {
				need_warning = false;
				break;
			}
		}
		if (need_warning) {
			warnings.push_back(RTR("The TileMap node is set as Y-sorted, but Y-sort is not enabled on any of the TileMap's layers.\nThis may lead to unwanted behaviors, as a layer that is not Y-sorted will be Y-sorted as a whole."));
		}
	}
	
	if (tile_set.is_valid() && tile_set->get_tile_shape() == TileSet::TILE_SHAPE_ISOMETRIC) {
		bool warn = !is_y_sort_enabled();
		if (!warn) {
			for (const Ref<TileMapLayer> &layer : layers) {
				if (!layer->is_y_sort_enabled()) {
					warn = true;
					break;
				}
			}
		}
		if (warn) {
			warnings.push_back(RTR("Isometric TileSet will likely not look as intended without Y-sort enabled for the TileMap and all of its layers."));
		}
	}
	return warnings;
}
void TileMap::_bind_methods() {