Show "Ask AI" button on Document Request Latency insight

Bug: 401232558
Change-Id: Ibc5e92ff8d42c6dddfd0b58b3ebbfc4c4a9c2469
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6351861
Commit-Queue: Nancy Li <[email protected]>
Commit-Queue: Jack Franklin <[email protected]>
Auto-Submit: Jack Franklin <[email protected]>
Reviewed-by: Nancy Li <[email protected]>

Author: jackfranklin

front_end/panels/timeline/components/insights/DocumentLatency.ts

@@ -18,6 +18,7 @@ const {html} = Lit;
 export class DocumentLatency extends BaseInsightComponent<DocumentLatencyInsightModel> {
   static override readonly litTagName = Lit.StaticHtml.literal`devtools-performance-document-latency`;
   override internalName = 'document-latency';
+  protected override hasAskAISupport = true;
 
   override createOverlays(): Overlays.Overlays.TimelineOverlay[] {
     if (!this.model?.data?.documentRequest) {