chore: add mentioned user id to updateActivity [FEEDS-748] (#194)

🎫 Ticket: https://linear.app/stream/issue/XYZ-123

📑 Docs: https://github.com/GetStream/docs-content/pull/<id>

### 💡 Overview

### 📝 Implementation notes

Author: itsmeadi

packages/feeds-client/src/gen/feeds/FeedsApi.ts

@@ -750,6 +750,7 @@ export class FeedsApi {
       feeds: request?.feeds,
       filter_tags: request?.filter_tags,
       interest_tags: request?.interest_tags,
+      mentioned_user_ids: request?.mentioned_user_ids,
       custom: request?.custom,
       location: request?.location,
     };