UserPasswordReset: Handle 'Cancel' and 'X' for the direct entry scenario.

The `UserPasswordReset` can be accessed in two places:
(1) While signing in
(2) From the Settings Page when changing password.

This commit:
- maintains the existing `Cancel|X` behavior for case-1, which is to remain in the Sign-in page.
- For case-2 and any future direct-entry, we'll simply call `goBack()`.

ui/component/header/view.jsx

@@ -78,6 +78,7 @@ const Header = (props: Props) => {
   const isVerifyPage = history.location.pathname.includes(PAGES.AUTH_VERIFY);
   const isSignUpPage = history.location.pathname.includes(PAGES.AUTH);
   const isSignInPage = history.location.pathname.includes(PAGES.AUTH_SIGNIN);
+  const isPwdResetPage = history.location.pathname.includes(PAGES.AUTH_PASSWORD_RESET);
 
   // Sign out if they click the "x" when they are on the password prompt
   const authHeaderAction = syncError ? { onClick: signOut } : { navigate: '/' };
@@ -95,6 +96,10 @@ const Header = (props: Props) => {
         history.goBack();
       }
 
+      if (isPwdResetPage) {
+        history.goBack();
+      }
+
       if (syncError) {
         signOut();
       }

ui/component/userPasswordReset/view.jsx

@@ -33,9 +33,10 @@ function UserPasswordReset(props: Props) {
     doClearEmailEntry,
     emailToVerify,
   } = props;
-  const { push } = useHistory();
+  const { location, push, goBack } = useHistory();
   const [email, setEmail] = React.useState(emailToVerify || '');
   const valid = email.match(EMAIL_REGEX);
+  const restartAtSignInPage = location.pathname === `/$/${PAGES.AUTH_SIGNIN}`;
 
   function handleSubmit() {
     if (email) {
@@ -47,7 +48,11 @@ function UserPasswordReset(props: Props) {
     setEmail('');
     doClearPasswordEntry();
     doClearEmailEntry();
+    if (restartAtSignInPage) {
       push(`/$/${PAGES.AUTH_SIGNIN}`);
+    } else {
+      goBack();
+    }
   }
 
   React.useEffect(() => {