Fix commit message rendering and some UI problems (#34680)

* Fix #34679
* Fix #34676
* Fix #34674
* Fix #34526

web_src/css/repo/issue-card.css

@@ -7,6 +7,7 @@
   padding: 8px 10px;
   border: 1px solid var(--color-secondary);
   background: var(--color-card);
+  color: var(--color-text); /* it can't inherit from parent because the card already has its own background */
 }
 
 .issue-card-icon,