fix(fxa-settings): Resolve recovery key confirm pwd button disabled

Because:

* In the new account recovery key creation flow, the confirm password CTA would remain disabled after an incorrect password was entered and the user retypes in the input, making it impossible to correct the password and retry

This commit:

* Enable the button when the password confirmation fails and an error message is displayed

Closes #FXA-8092

packages/fxa-settings/src/components/Settings/FlowRecoveryKeyConfirmPwd/index.tsx

@@ -50,13 +50,6 @@ export const FlowRecoveryKeyConfirmPwd = ({
   const [bannerText, setBannerText] = useState<string>();
   const [isLoading, setIsLoading] = useState(false);
   const [actionType, setActionType] = useState<RecoveryKeyAction>();
-  const mounted = useRef(true);
-
-  useEffect(() => {
-    return () => {
-      mounted.current = false;
-    };
-  });
 
   useEffect(() => {
     if (account.recoveryKey === true) {
@@ -115,10 +108,7 @@ export const FlowRecoveryKeyConfirmPwd = ({
         setBannerText(localizedError);
       }
       logViewEvent(`flow.${viewName}`, 'confirm-password.fail');
-    } finally {
-      if (mounted.current) {
-        setIsLoading(false);
-      }
+      setIsLoading(false);
     }
   }, [
     account,