[users list modal] ismoo parameter need to still exist after form sub…

…mit (solve #12122) (#12137)

* ismoo parameter need to exist after form submit

* int

* default to 1

administrator/components/com_users/views/users/tmpl/modal.php

@@ -123,6 +123,7 @@
 		<input type="hidden" name="field" value="<?php echo $this->escape($field); ?>" />
 		<input type="hidden" name="boxchecked" value="0" />
 		<input type="hidden" name="required" value="<?php echo $userRequired; ?>" />
+		<input type="hidden" name="ismoo" value="<?php echo $input->get('ismoo', 1, 'int'); ?>" />
 		<?php echo JHtml::_('form.token'); ?>
 	</form>
 </div>