### Godot version

v4.0.3.stable.mono.official [5222a99f5]

### System information

macOS Monterey 12.6.6 (21G646)

### Issue description

When creating a tileset by code with custom data layers, removing a layer with `remove_custom_data_layer` does not update the name-to-layer mapping; `get_custom_data_layer_by_name` will continue to return that layer's original index.

This has a downstream effect of causing TileData objects attempting to use `get_custom_data('Layer B')` to return invalid data (whatever custom data is now in Layer B's old index; e.g. Layer C).

I would expect that after using `remove_custom_data_layer`, I would be able to still use `get_custom_data_layer_by_name` on that tileset.

### Steps to reproduce

Run this code to see that getting Layer B by name after removing the first layer continues to return its original index (1) when in reality it is now at index 0.
```
	var tileset:TileSet = TileSet.new()

	tileset.add_custom_data_layer()
	tileset.set_custom_data_layer_name(0, 'Layer A')
	tileset.set_custom_data_layer_type(0, TYPE_INT)

	tileset.add_custom_data_layer()
	tileset.set_custom_data_layer_name(1, 'Layer B')
	tileset.set_custom_data_layer_type(1, TYPE_STRING)

	print('Layer index 0 name : ', tileset.get_custom_data_layer_name(0)) # Layer A
	print('Layer index 1 name : ', tileset.get_custom_data_layer_name(1)) # Layer B
	print('Layer B is on index : ', tileset.get_custom_data_layer_by_name("Layer B")) # 1

	print('----- removing custom data layer 0 -----')
	tileset.remove_custom_data_layer(0)

	print('Layer index 0 name : ', tileset.get_custom_data_layer_name(0)) # Layer B
	print('Layer index 1 name : ', tileset.get_custom_data_layer_name(1)) # prints an error, as expected
	print('Layer B is on index : ', tileset.get_custom_data_layer_by_name("Layer B")) # returns 1 still! should return 0.
```

### Minimal reproduction project

[RemoveCustomDataLayer.zip](https://github.com/godotengine/godot/files/11804762/RemoveCustomDataLayer.zip)

if (p_property.name == "tile_layout" && tile_shape == TILE_SHAPE_SQUARE) {
		p_property.usage ^= PROPERTY_USAGE_READ_ONLY;
	} else if (p_property.name == "tile_offset_axis" && tile_shape == TILE_SHAPE_SQUARE) {
		p_property.usage ^= PROPERTY_USAGE_READ_ONLY;
	}
}
void TileSet::_bind_methods() {
	
	ClassDB::bind_method(D_METHOD("get_next_source_id"), &TileSet::get_next_source_id);
	ClassDB::bind_method(D_METHOD("add_source", "source", "atlas_source_id_override"), &TileSet::add_source, DEFVAL(TileSet::INVALID_SOURCE));
	ClassDB::bind_method(D_METHOD("remove_source", "source_id"), &TileSet::remove_source);
	ClassDB::bind_method(D_METHOD("set_source_id", "source_id", "new_source_id"), &TileSet::set_source_id);
	ClassDB::bind_method(D_METHOD("get_source_count"), &TileSet::get_source_count);
	ClassDB::bind_method(D_METHOD("get_source_id", "index"), &TileSet::get_source_id);
	ClassDB::bind_method(D_METHOD("has_source", "source_id"), &TileSet::has_source);
	ClassDB::bind_method(D_METHOD("get_source", "source_id"), &TileSet::get_source);
	
	ClassDB::bind_method(D_METHOD("set_tile_shape", "shape"), &TileSet::set_tile_shape);
	ClassDB::bind_method(D_METHOD("get_tile_shape"), &TileSet::get_tile_shape);
	ClassDB::bind_method(D_METHOD("set_tile_layout", "layout"), &TileSet::set_tile_layout);
	ClassDB::bind_method(D_METHOD("get_tile_layout"), &TileSet::get_tile_layout);
	ClassDB::bind_method(D_METHOD("set_tile_offset_axis", "alignment"), &TileSet::set_tile_offset_axis);
	ClassDB::bind_method(D_METHOD("get_tile_offset_axis"), &TileSet::get_tile_offset_axis);
	ClassDB::bind_method(D_METHOD("set_tile_size", "size"), &TileSet::set_tile_size);
	ClassDB::bind_method(D_METHOD("get_tile_size"), &TileSet::get_tile_size);
	ADD_PROPERTY(PropertyInfo(Variant::INT, "tile_shape", PROPERTY_HINT_ENUM, "Square,Isometric,Half-Offset Square,Hexagon"), "set_tile_shape", "get_tile_shape");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "tile_layout", PROPERTY_HINT_ENUM, "Stacked,Stacked Offset,Stairs Right,Stairs Down,Diamond Right,Diamond Down"), "set_tile_layout", "get_tile_layout");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "tile_offset_axis", PROPERTY_HINT_ENUM, "Horizontal Offset,Vertical Offset"), "set_tile_offset_axis", "get_tile_offset_axis");