### Godot version

v4.0.beta12.mono.official

### System information

Linux 6.1.6-arch1-1

### Issue description

When creating TileSets from code, the TileSet's `add_source(source: TileSetSource, atlas_source_id_override: int = -1)` method is supposed to accept gdscript int (which is a signed 64-bit int), however feeding it with integers above C++ signed int (>2147483647) will result in a failure - in fact the actual return int (which is supposed to be the source_id override) is equal to 0 and not -1 as method description implies should be the case when the source could not be added. 

PS. Why do I need such huge numbers for tileset sources? I'm adding tilesets from a set of config text files and I'm hashing some parameters from it (via String `hash()` method which returns a 32-bit int) to use as a source_id for the tile set source. I will workaround that one way or another, of course, it's only marginally annoying :) 




### Steps to reproduce

```
var tileset : TileSet = TileSet.new()
var tileset_source : TileSetAtlasSource = TileSetAtlasSource.new()
	
var result : int 
	
result = tileset.add_source(tileset_source, 2147483647)
print("Adding source ID 2147483647 (int) -> ", result) # OK for signed int
	
result = tileset.add_source(tileset_source, 2147483648)
print("Adding source ID 2147483648 (signed int +1) -> ", result) # NOK 
```

![image](https://user-images.githubusercontent.com/16452779/212549500-f5fbdf2b-1643-4874-ae49-19908cab55f4.png)


### Minimal reproduction project

N/A
Simple code to reproduce as depicted above. 
per_terrain_pattern_tiles[terrain_set][terrains_pattern].insert(cell);
							}
							
							for (int i = 0; i < TileSet::CELL_NEIGHBOR_MAX; i++) {
								CellNeighbor bit = CellNeighbor(i);
								if (is_valid_terrain_peering_bit(terrain_set, bit)) {
									int terrain = terrains_pattern.get_terrain_peering_bit(bit);
									if (terrain >= 0) {
										per_terrain_pattern_tiles[terrain_set][terrains_pattern].insert(cell);
									}
								}
							}
						}
					}
				}
			}
		}
		
		for (int i = 0; i < terrain_sets.size(); i++) {
			TileSet::TerrainsPattern empty_pattern(this, i);
			TileMapCell empty_cell;
			empty_cell.source_id = TileSet::INVALID_SOURCE;
			empty_cell.set_atlas_coords(TileSetSource::INVALID_ATLAS_COORDS);
			empty_cell.alternative_tile = TileSetSource::INVALID_TILE_ALTERNATIVE;
			per_terrain_pattern_tiles[i][empty_pattern].insert(empty_cell);
		}
		terrains_cache_dirty = false;
	}
}
void TileSet::_compute_next_source_id() {