fix(home): handle startRecognition failure in restartRecognition

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/home/components/user-input/user-input.tsx

@@ -551,7 +551,9 @@ export function UserInput({
       prefixRef.current = newPrefix
       recognitionRef.current.abort()
       recognitionRef.current = null
-      startRecognition()
+      if (!startRecognition()) {
+        setIsListening(false)
+      }
     },
     [startRecognition]
   )