### 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. 
if (custom_data_layers_by_name.has(p_value)) {
		return custom_data_layers_by_name[p_value];
	} else {
		return -1;
	}
}
void TileSet::set_custom_data_layer_name(int p_layer_id, String p_value) {
	ERR_FAIL_INDEX(p_layer_id, custom_data_layers.size());
	
	if (!p_value.is_empty()) {
		for (int other_layer_id = 0; other_layer_id < get_custom_data_layers_count(); other_layer_id++) {
			if (other_layer_id != p_layer_id && get_custom_data_layer_name(other_layer_id) == p_value) {
				ERR_FAIL_MSG(vformat("There is already a custom property named %s", p_value));
			}
		}
	}
	if (p_value.is_empty() && custom_data_layers_by_name.has(p_value)) {
		custom_data_layers_by_name.erase(p_value);
	} else {
		custom_data_layers_by_name[p_value] = p_layer_id;
	}
	custom_data_layers.write[p_layer_id].name = p_value;
	emit_changed();
}
String TileSet::get_custom_data_layer_name(int p_layer_id) const {