enhance(repo): unify diff stats on commit pages, misc diff tweaks (#39134)

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

web_src/css/review.css

@@ -114,10 +114,6 @@
   margin: 0 0 0 3em;
 }
 
-.diff-file-body.binary {
-  padding: 5px 10px;
-}
-
 .file-comment {
   color: var(--color-text);
 }