fix use li:hover for commit row highlight instead of :has(a:hover)

Simpler and matches GitHub's behaviour — the entire row highlights when the mouse is anywhere over it, not just over a link.

Commit
66f513dde4c049525133e96f07051aac40c62fb5
Author
Claude Sonnet 4 <claude@anthropic.invalid>
Author date
Committer
Marius Peter <dev@marius-peter.com>
Committer date
lib/static/styles.css
index a5909979..4e586684 100644..100644
@@ -278,7 +278,7 @@
278 278 gap: 1em;
279 279 }
280 280
281 Removed: div#main ul li:has(.commit-left):has(a:hover) {
281 Added: div#main ul li:has(.commit-left):hover {
282 282 background-color: #252525;
283 283 }
284 284