Merge branch 'slashmanov/fix-diff-hunk-header-overflow' into 'master'

Fix diff hunk header overflow

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/171299



Merged-by: Phil Hughes <me@iamphill.com>
Approved-by: Phil Hughes <me@iamphill.com>
Co-authored-by: Stanislav Lashmanov <slashmanov@gitlab.com>

app/assets/stylesheets/framework/diffs.scss

@@ -446,13 +446,10 @@ table.code {
     line-height: $code-line-height;
     font-size: $code-font-size;
     vertical-align: top;
+    word-wrap: break-word;
 
     span {
       white-space: break-spaces;
-
-      &.line {
-        word-wrap: break-word;
-      }
     }
 
     &.diff-line-num {