For `text area` component, add flag to enable or disable the component expansion

[pylapp]

Description

A a developer,
I want something for my text area component to enable or disable the component expansion,
So that I can block the text area to be bigger

A a maintainer,
I want to provide to my users a flag for the text area component for expansion,
So that they can block the sizing and avoid to modify the size of the component themselves