hovering the empty space at the bottom of the table shouldn't dim all the resources in the table we should only dim resources when we have at least one thing undimmed (i.e. the resource under the mouse)
Pull request: https://github.com/WebKit/WebKit/pull/3255
Committed 253476@main (06e6a494bd4c): <https://commits.webkit.org/253476@main> Reviewed commits have been landed. Closing PR #3255 and removing active labels.
<rdar://problem/98744289>