Fix more quick input styling issues

[msujew]

What it does

1. Closes monaco: quick-input list styling needs to be adjusted #10987 by fixing the actual source of the misalignment. A codicon css rule sets the line-height of the whole row to 13px which messes up all of the sub-layouting
2. Fixes a minor font issue for label-description parts of the quick input row, which used a serif font. See also monaco: fix styling of toggled commands #10962

How to test

1. Open the command palette and enter view: toggle
2. Assert that quick input items with checkmarks are correctly layouted
3. Run the Open Recent Workspaces command (The original issue only seems to appear on Windows+Electron, don't know why)
4. Assert that the label-description font is using the default app font

Review checklist

• As an author, I have thoroughly tested my changes and carefully followed the review guidelines

Reminder for reviewers

• As a reviewer, I agree to behave in accordance with the review guidelines

[vince-fugnitto]

Thank you for taking a look into fixing the problem 👍
I confirmed that it works well for, I also confirmed using different file-icon themes.