fix: prevent duplicate AI models in selector and fix TypeScript errors

Changes:
1. Enhanced removeDuplicateProviders() to filter out duplicate providers from SDK
   when the same provider exists in extras (qwen-oauth, zai, ollama-cloud, antigravity)
2. Added logic to remove any Qwen-related SDK providers when qwen-oauth is authenticated
3. Fixed missing setActiveParentSession import in instance-shell2.tsx

These changes ensure:
- No duplicate models appear in the model selector
- Qwen OAuth models don't duplicate with any SDK Qwen providers
- TypeScript compilation passes successfully

packages/ui/src/components/instance/instance-shell2.tsx

@@ -36,6 +36,7 @@ import {
   getSessionInfo,
   sessions,
   setActiveSession,
+  setActiveParentSession,
   executeCustomCommand,
   sendMessage,
   runShellCommand,