[CORL-2934]: More DSA polish

What does this PR do?

These changes make a number of design UI and copy updates related to DSA feature QA.

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Check out the updated copy on the report form
The confirmation screen is updated after you submit a report (test with both successful submissions and a submission that errors)
Go into user history drawer for a commenter that has had a comment rejected for illegal content. See that there is a marker for Illegal content next to that comment in the Rejected tab
Add additional comments to a DSA report in the report form and see the updated/streamlined flow
In the admin, on the single DSA Report page, click Decision button to open the make a decision modal and see the updated styles/functionality there
There is now a cursor pointer shown when hovering over the Reports table in the admin
Clicking on the Comments tab from the report form page (and permalink page) now goes back to all comments
If you add a really long text input to the law broken input, it will be truncated when shown in the Reports table
When clicking Report and seeing the report illegal content link in the report form for a comment, the link copy is updated and an icon added
on page load, if the report form isn't in view, it is now scrolled down to