### 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)

if (tile_offset_axis == TileSet::TILE_OFFSET_AXIS_HORIZONTAL) {
		if (tile_shape == TileSet::TILE_SHAPE_ISOMETRIC) {
			overlapping_ratio = 0.5;
		} else if (tile_shape == TileSet::TILE_SHAPE_HEXAGON) {
			overlapping_ratio = 0.75;
		}
		ret.y /= overlapping_ratio;
	} else { 
		if (tile_shape == TileSet::TILE_SHAPE_ISOMETRIC) {
			overlapping_ratio = 0.5;
		} else if (tile_shape == TileSet::TILE_SHAPE_HEXAGON) {
			overlapping_ratio = 0.75;
		}
		ret.x /= overlapping_ratio;
	}
	
	if (tile_shape == TileSet::TILE_SHAPE_HALF_OFFSET_SQUARE || tile_shape == TileSet::TILE_SHAPE_HEXAGON || tile_shape == TileSet::TILE_SHAPE_ISOMETRIC) {
		
		
		if (tile_offset_axis == TileSet::TILE_OFFSET_AXIS_HORIZONTAL) {
			
			Vector2 raw_pos = ret;
			if (Math::posmod(Math::floor(ret.y), 2) ^ (tile_layout == TileSet::TILE_LAYOUT_STACKED_OFFSET)) {
				ret = Vector2(Math::floor(ret.x + 0.5) - 0.5, Math::floor(ret.y));
			} else {
				ret = ret.floor();
			}
			
			Vector2 in_tile_pos = raw_pos - ret;
			bool in_top_left_triangle = (in_tile_pos - Vector2(0.5, 0.0)).cross(Vector2(-0.5, 1.0 / overlapping_ratio - 1)) <= 0;