Truncate commit summary on repo files table. (#22551)

There was an unintended regression in #21124 which assumed that
`.commits-list .message-wrapper` would only match the commit summaries
on `/{owner}/{name}/commits/*`. This assumption is incorrect as the
directory/file view also uses a `.commits-list` wrapper.

Rather than completely restructure this page this PR simply adjusts the
styling to again use `display: inline-block;` for `#repo-files-table
.commit-list .message-wrapper`

Fix #22360

Signed-off-by: Andrew Thornton <art27@cantab.net>

web_src/less/_repository.less

@@ -2904,6 +2904,11 @@ tbody.commit-list {
   display: inline;
 }
 
+// but in the repo-files-table we cannot
+#repo-files-table .commit-list .message-wrapper {
+  display: inline-block;
+}
+
 @media @mediaSm {
   tr.commit-list {
     width: 100%;