Describe the bug

To Reproduce
Steps to reproduce the behavior:

1. Set RTL layout.
2. Make a TextEdit widget
3. When extra size is needed, UI::allocate_rect is called and UI ends up with cursor pointing to the wrong side of TextEdit widget
4. Next widget overlaps with TextEdit.
5. This happens for just 1 frame unless specific sizes introduce rounding error, leading to extra_size to be non-zero each frame.

Expected behavior
Cursor is pointing to the left side of TextEdit in RTL layout.

Screenshots