2139 Clean up Create Role Proposal UI

[Da-Colon]

Remove Grid component and adjust width to properly size screen

Fixes #2139

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[adamgall]

@Da-Colon what are the changes here?

[Da-Colon]

@Da-Colon what are the changes here?

So when opening on desktop this screen width was going past the width of the screen causing not only header line to go off screen but also the horizontal scroll to appear. It was setup to be a Grid for a two-column setup but currently isn't going to be implemented that way.

[tomstuart123]

@Da-Colon sorry to jump in but @adamgall and I just discussed this page. It still feels a little far to the left (horizontally) and a little less padding (vertically) than would be ideal

At the same time, @adamgall it seems like this PR fixes the original issue so shall we review and merge this and then create a new issue just for this page (probably to be implemented once sablier is done)

Wdyt both think?

[adamgall]

Confirmed with @Da-Colon and @tomstuart123 to merge this as-is