fix(settings): dont send duplicate otp codes

Because:

- For relying parties with configured CMS customization, users are
  receiving duplicate OTP codes on signin and signup.

This commit:

- Ensure only 1 OTP code is sent, by only calling
  authClient.sendPasswordlessCode on component mount.

Closes #FXA-13276

Author: StaberindeZA

packages/fxa-settings/src/pages/Signin/SigninPasswordlessCode/container.tsx

@@ -83,7 +83,9 @@ const SigninPasswordlessCodeContainer = ({
       };
       sendCode();
     }
-  }, [email, service, codeSent, authClient, integration, navigateWithQuery, location.pathname, location.search, location.state, flowQueryParams]);
+    // Only run this on initial render
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
 
   if (!email) {
     return (
@@ -132,4 +134,4 @@ const SigninPasswordlessCodeContainer = ({
   );
 };
 
-export default SigninPasswordlessCodeContainer;
+export default SigninPasswordlessCodeContainer;