Update the diff collapse button for dark mode.

Review Request #13763 — Created April 22, 2024 and submitted — Latest diff uploaded

Information

Review Board
release-7.x

Reviewers

In light mode, the diff collapse button retains the styling we had
before. However, in dark mode, it takes on a Primary Button appearance.
This helps it stand out better against the dark background.

Some effort was put into just using a button styling across the board,
but ultimately I decided not to affect the light mode appearance too
much at this stage.

Tested on light and dark mode.


Commits

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