When we implemented the fix to help keep the comment dialog from

scrolling out of bounds when attempting to scroll part of the comment

dialog's UI, we only enabled scrolling for the text area. Attempting to

scroll the list of other comments on a line no longer worked, as the

event would get swallowed.
We now make an exception for this part of the UI, allowing it to scroll

just like the text area.

Verified I could scroll both the text area and the list of other comments,

but otherwise scroll events did not bubble up to the page.