### Godot version

v4.2.rc2.official [1ba920fad]

### System information

Godot v4.2.rc2 - macOS 14.1.1 - Vulkan (Forward+) - integrated Apple M1 - Apple M1 (8 Threads)

### Issue description

Crash when trying to use "cell_quadrant_size".

The same project works without problems in 4.1.3

### Steps to reproduce

Open the attached project and run it, it'll crash. "Invalid get index"
![スクリーンショット 2023-11-27 16 35 07](https://github.com/godotengine/godot/assets/106015575/50d38ceb-0e6e-49bc-96dc-60abd1d2b6c0)

Here is what the same project looks like when launched from 4.1.3:
![image](https://github.com/godotengine/godot/assets/106015575/4e7e1f1a-ad5b-40ab-90ae-35130c803f09)

### Minimal reproduction project

[engage bug 03.zip](https://github.com/godotengine/godot/files/13471828/engage.bug.03.zip)

if (cell.source_id != TileSet::INVALID_SOURCE) {
				Ref<TileSetSource> source = tile_set->get_source(cell.source_id);
				Ref<TileSetAtlasSource> atlas_source = source;
				if (atlas_source.is_valid()) {
					tile_data = atlas_source->get_tile_data(cell.get_atlas_coords(), cell.alternative_tile);
				}
			}
			if (tile_data && tile_data->get_terrain_set() == p_terrain_set && tile_data->get_terrain() == p_terrain) {
				connect = true;
			}
		}
		if (connect) {
			cells_with_terrain_center_bit.insert(coords);
		}
	}
	RBSet<TerrainConstraint> constraints;
	
	for (Vector2i coords : p_coords_array) {
		
		TerrainConstraint c = TerrainConstraint(tile_map_node, coords, p_terrain);
		c.set_priority(10);
		constraints.insert(c);
		
		for (int j = 0; j < TileSet::CELL_NEIGHBOR_MAX; j++) {
			TileSet::CellNeighbor bit = TileSet::CellNeighbor(j);
			if (tile_set->is_valid_terrain_peering_bit(p_terrain_set, bit)) {
				c = TerrainConstraint(tile_map_node, coords, bit, p_terrain);
				c.set_priority(10);
				if ((int(bit) % 2) == 0) {