Refactor/discussion prompt composer component

[Hashmi125]

Description

-The duplicate Tailwind CSS import on line 1 has been removed, as it is unnecessary. -The changes in lines 15 and 51 have been undone. -The Angular Material library components (mat and ng) have been reverted to their original state. -The code has been formatted using the Prettier extension.

Testing Checklist:

• [x] Tested in latest Chrome
• [x] Tested in latest Safari
• [x] Tested in latest Firefox

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have requested a review from @macite and @jakerenzella on the Pull Request

[maddernd]

This needs closing as this is not PR that is acceptable upstream.

[Hashmi125]

Done.