feat: allow selecting specific pending Reown request from carousel overlay

[andreabadesso]

Context

PR #857 added a global overlay with a carousel of pending dApp requests and a "Reject All" button. The carousel currently lets users browse pending requests but they can only reject all — they can't select a specific request to review/respond to.

Desired Behavior

When the user swipes through the carousel and taps a specific request card, the app should:

1. Skip/reject all requests before the selected one in the queue
2. Navigate to the detail screen for the selected request
3. The user can then accept or reject that specific request

Technical Considerations

• The unifiedReownFlowListener saga processes requests sequentially from an action channel
• The current request is mid-flight in handleRpcRequest → promptHandler (Promise-based)
• To "jump" to a selected request, we'd need to:
  • Reject the current request (dispatch reownReject())
  • Auto-reject queued requests before the selected one via walletKit.respondSessionRequest()
  • Let the queue naturally reach the selected request (it already skips already-responded requests)

Alternative Approach

Add per-card "Accept" / "Reject" / "Review" buttons directly on the carousel cards:

• Read-only requests (Get Balance, Get Address, Get UTXOs): Show "Accept" / "Reject" buttons that respond directly via WalletKit, bypassing the saga queue
• Write operations (Send Transaction, Create Token, Nano Contract): Show "Review" button that navigates to the detail screen

This would be more powerful but requires handling responses outside the saga queue.

Related

• PR feat: add batch reject for pending Reown dApp requests #857 — feat: add batch reject for pending Reown dApp requests