Refactor: Improve validation schemas

src/components/auth/MFAChallenge.tsx

@@ -89,6 +89,7 @@ export function MFAChallenge({ factorId, onSuccess, onCancel }: MFAChallengeProp
             value={code}
             onChange={setCode}
             onComplete={handleVerify}
+            onPaste={(e) => e.preventDefault()}
           >
             <InputOTPGroup>
               <InputOTPSlot index={0} />