Update background color of comment when resolved status updates

Release-Notes: skip
Google-bug-id: b/242982372
Change-Id: I7f712b1d705317e43e84b8a2067263122291c0f8

polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.ts

diff --git a/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.ts b/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.ts
index 015c205..e42c0f1 100644
--- a/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.ts
+++ b/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.ts
@@ -965,6 +965,9 @@
       <gr-comment
         .comment=${this.patchsetLevelComment}
         .comments=${[this.patchsetLevelComment]}
+        @comment-unresolved-changed=${(e: CustomEvent) => {
+          this.isResolvedPatchsetLevelComment = !e.detail;
+        }}
         hide-header
         permanent-editing-mode
       ></gr-comment>