fix: keep tabs visible when agent is stopped (#9941)

Co-authored-by: openhands <openhands@all-hands.dev>

frontend/src/types/agent-state.tsx

@@ -17,6 +17,6 @@ export enum AgentState {
 export const RUNTIME_INACTIVE_STATES = [
   AgentState.INIT,
   AgentState.LOADING,
-  AgentState.STOPPED,
+  // Removed AgentState.STOPPED to allow tabs to remain visible when agent is stopped
   AgentState.ERROR,
 ];