Auto merge of #25847 - ferjm:issue.25709, r=SimonSapin

Properly position atomic inline level boxes

- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #25709

components/layout_2020/flow/inline.rs

@@ -567,7 +567,10 @@ fn layout_atomic<'box_tree>(
         },
     };
 
-    ifc.inline_position += pbm.inline_end;
+    ifc.inline_position += pbm.inline_end + fragment.content_rect.size.inline;
+    ifc.current_nesting_level
+        .max_block_size_of_fragments_so_far
+        .max_assign(pbm.block_sum() + fragment.content_rect.size.block);
     ifc.current_nesting_level
         .fragments_so_far
         .push(Fragment::Box(fragment));