A `Control` can define `get_desired_size()` which allows it to grow based on its content without increasing its minimum size.
This new size will be respected by parent `Container`s.
Currently used by `Label` and `TabBar`.
This property mirrors `custom_minimum_size` and enables the user to set a size the `Control`. Enabling `propagate_maximum_size` forces all children to respect this node's maximum_size.
Not all `Control` types handle this gracefully, which may result in content clipping.
- Makes `is_layout_rtl()` translation domain aware
- Makes various text-drawing controls translation domain aware
- Makes translation preview use the project's fallback locale when disabled