deslop: trim comments and changeset to one line

Author: tsck

.changeset/descendants-iframe-owner-document.md

@@ -2,4 +2,4 @@
 '@leafygreen-ui/descendants': patch
 ---
 
-[UXE-495](https://jira.mongodb.org/browse/UXE-495): Fix descendant registration failing inside an iframe. Descendant components (e.g. `Tabs`) rendered in an iframe would all appear selected because the containment check compared against the top-level `document` instead of the element's own document. The check now uses `ref.current.ownerDocument`, so registration works across document boundaries.
+[UXE-495](https://jira.mongodb.org/browse/UXE-495): Fix Tabs (and other descendant components) all appearing selected when rendered inside an iframe.

packages/descendants/src/Descendants/Descendants.spec.tsx

@@ -174,9 +174,6 @@ describe('packages/descendants', () => {
     });
 
     test('registers descendants rendered inside an iframe', () => {
-      // Elements inside an iframe belong to a different document than the
-      // top-level `document`, so registration must use the element's
-      // ownerDocument for the containment check. (UXE-495)
       const iframe = document.createElement('iframe');
       document.body.appendChild(iframe);
       const iframeDocument = iframe.contentDocument!;

packages/descendants/src/Descendants/useDescendant.tsx

@@ -52,8 +52,7 @@ export const useDescendant = <T extends HTMLElement>(
   // On render, register the element as a descendant
   useIsomorphicLayoutEffect(() => {
     const _id = id.current;
-    // Use the element's owning document so containment checks work inside an
-    // iframe, where the global `document` differs from the element's document.
+    // Use ownerDocument so containment checks work when the element is in an iframe.
     const refExists =
       ref.current?.ownerDocument?.contains(ref.current) ?? false;