enhance: improve commit page header (#39229)

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

web_src/css/repo.css

@@ -131,7 +131,8 @@
   margin-bottom: 12px;
 }
 
-.commit-summary {
+.latest-commit .commit-summary,
+.repo-file-item .commit-summary {
   flex: 1;
   overflow-wrap: anywhere;
   overflow: hidden;
@@ -139,11 +140,6 @@
   text-overflow: ellipsis;
 }
 
-.commit-header .commit-summary,
-td .commit-summary {
-  white-space: normal;
-}
-
 .latest-commit {
   display: flex;
   flex: 1;
@@ -1686,10 +1682,6 @@ tbody.commit-list {
   .repository.view.issue .comment-list .comment-header-right .role-label {
     display: none;
   }
-  .commit-header h3 {
-    flex-basis: auto !important;
-    margin-bottom: 0.5rem !important;
-  }
   .commit-table {
     overflow-x: auto;
   }