Implemented the proper hugging constraints for stretchy controls in tBox.
Implemented the proper hugging constraints for stretchy controls in tBox.

ProtonMail/libui,sclukey/libui,ProtonMail/libui,tbodt/libui,mantyr/libui,ProtonMail/libui,mantyr/libui,mantyr/libui,sclukey/libui,tbodt/libui