Merge branch '296222-long-comments-overflow-container-on-merge-diffs' into 'master'

Resolve "Long comments overflow container on merge diffs"

See merge request gitlab-org/gitlab!50715

app/assets/stylesheets/framework/diffs.scss

@@ -601,27 +601,27 @@ table.code {
 
   .diff-grid-comments {
     display: grid;
-    grid-template-columns: 1fr 1fr;
+    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
   }
 
   .diff-grid-drafts {
     display: grid;
-    grid-template-columns: 1fr 1fr;
+    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
   }
 
   &.inline {
     .diff-grid-comments {
       display: grid;
-      grid-template-columns: 1fr;
+      grid-template-columns: minmax(0, 1fr);
     }
 
     .diff-grid-drafts {
       display: grid;
-      grid-template-columns: 1fr;
+      grid-template-columns: minmax(0, 1fr);
     }
 
     .diff-grid-row {
-      grid-template-columns: 1fr;
+      grid-template-columns: minmax(0, 1fr);
     }
 
     .diff-grid-left,