Show the route configuration in the news feed page (see #6960)

Description
-----------

It sure makes sense to see that the RSS page has a .xml suffix, right? Not sure if the page can have parameters at all?

<img width="1664" alt="Bildschirmfoto 2024-03-04 um 15 31 33" src="https://github.com/contao/contao/assets/1073273/e83ec5d5-790c-4c4a-a4ec-d2c1a87d2d8e">

Commits
-------

e57d3ef Added route config to news feed page
c43019b Add the class "clr" to the route path widget

Co-authored-by: leofeyer <1192057+leofeyer@users.noreply.github.com>

core-bundle/templates/Backend/be_route_path.html.twig

@@ -1,5 +1,5 @@
 {% trans_default_domain 'contao_tl_page' %}
-<div class="w50 widget">
+<div class="w50 widget clr">
     <h3>{{ 'tl_page.routePath.0'|trans }}</h3>
     <p class="info">{{ path|raw }}</p>
     <p class="tl_help tl_tip" title="">{{ 'tl_page.routePath.1'|trans }}</p>

news-bundle/contao/dca/tl_page.php

@@ -8,7 +8,7 @@
  * @license LGPL-3.0-or-later
  */
 
-$GLOBALS['TL_DCA']['tl_page']['palettes']['news_feed'] = '{title_legend},title,type;{routing_legend},alias;{archives_legend},newsArchives;{feed_legend},feedFormat,feedSource,maxFeedItems,feedFeatured,feedDescription;{image_legend},imgSize;{cache_legend:hide},includeCache;{expert_legend:hide},cssClass,sitemap,hide,noSearch;{publish_legend},published,start,stop';
+$GLOBALS['TL_DCA']['tl_page']['palettes']['news_feed'] = '{title_legend},title,type;{routing_legend},alias,routePath,routePriority,routeConflicts;{archives_legend},newsArchives;{feed_legend},feedFormat,feedSource,maxFeedItems,feedFeatured,feedDescription;{image_legend},imgSize;{cache_legend:hide},includeCache;{expert_legend:hide},cssClass,sitemap,hide,noSearch;{publish_legend},published,start,stop';
 
 $GLOBALS['TL_DCA']['tl_page']['fields']['newsArchives'] = array(
 	'exclude' => true,