Fix broken layout in AddIdentityForm

ref #1700

Author: louischan-oursky

portal/src/graphql/adminapi/AddIdentityForm.module.scss

@@ -3,3 +3,7 @@
   margin: 10px 20px;
   font-size: 15px;
 }
+
+.widget {
+  grid-column: 1 / span 6;
+}

portal/src/graphql/adminapi/AddIdentityForm.tsx

@@ -184,8 +184,7 @@ const AddIdentityForm: React.FC<AddIdentityFormProps> =
           <LoginIDField value={form.state.loginID} onChange={onLoginIDChange} />
           {requirePassword && (
             <PasswordField
-              className={styles.password}
-              textFieldClassName={styles.passwordField}
+              className={styles.widget}
               passwordPolicy={passwordPolicy}
               label={renderToString("AddUsernameScreen.password.label")}
               value={form.state.password}