Fix accessing Model\Collection instead of Model in ModuleFaqPage (see c…

…ontao#2788)

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

| Q                | A
| -----------------| ---
| Fixed issues     | Fixes contao#2786 
| Docs PR or issue | -

`$figureBuilder->setMetadata($objFaq->getOverwriteMetadata())` was failing because `$objFaq` is a `Model\Collection` instead of a `Model`. To prevent this rather hard to spot error in the future, I adjusted how we're iterating over the results instead.

Commits
-------

ff2f8b9 iterate over FaqModels instead of operating on Model\Collection
c2934f0 Merge branch '4.11' into bugfix/module-faq-model-collection

faq-bundle/src/Resources/contao/modules/ModuleFaqPage.php

@@ -74,9 +74,9 @@ public function generate()
 	 */
 	protected function compile()
 	{
-		$objFaq = FaqModel::findPublishedByPids($this->faq_categories);
+		$objFaqs = FaqModel::findPublishedByPids($this->faq_categories);
 
-		if ($objFaq === null)
+		if ($objFaqs === null)
 		{
 			$this->Template->faq = array();
 
@@ -90,7 +90,7 @@ protected function compile()
 		$arrFaqs = array_fill_keys($this->faq_categories, array());
 
 		// Add FAQs
-		while ($objFaq->next())
+		foreach ($objFaqs as $objFaq)
 		{
 			/** @var FaqModel $objFaq */
 			$objTemp = (object) $objFaq->row();