PERFORMANCE: Starred Messages/Mentions tabs perform blocking sequential waterfalls

[iramsk02]

• The current implementation of StarredMessagesTab.tsx and MentionsTab.tsx fetches all historical records using a sequential for loop inside the useQuery hook.

• This causes a blocking UI state where users cannot see any results until the server has responded to every single pagination request.

• Actual Behavior:
  The code uses a loop like this:

for (let offset = 0, result = await getStarredMessages({ roomId, offset: 0 }); ...) {
    messages.push(...result.messages);
}

This means Page 2 cannot start loading until Page 1 is fully completed and mapped.

• Expected Behavior:
• The application should use Infinite Loading (Streaming).
• Page 1 should be displayed as soon as it is available, and subsequent pages should only be fetched as the user reaches the bottom of the list.