Quick Answers V2: Fix crash in settings

Bug: 1247479
Test: Manual Test
Change-Id: Iaf6a48b701d3149437b7dbc58958d27fea1f45aa
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3146415


Commit-Queue: Yue Li <updowndota@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/main@{#919127}