[OUDS] Remove textarea resizing feature on touchscreen devices

[vprothais]

Prerequisites

• I have searched for duplicate or closed feature requests
• I have read the contributing guidelines

Proposal

Since resizing textarea is amlost impossible on touchscreen devices we should remove this property for those devices. Following an post in Teams in the textarea working group, we decided to remove this feature for devices validating this media query :

@media (pointer: coarse) and not (any-pointer: fine)

Motivation and context

The resizing feature on touching devices is almost unusable and the feature is not available in native application. The goal is to remove this feature on those devices to get consistency with native app.