MC-18822: Increase test coverage for Content functional area

Add clear cache and reindex for layer navigation of test MC-6192

Author: kieuphan2406

app/code/Magento/LayeredNavigation/Test/Mftf/Test/AdminCheckResultsOfColorAndOtherFiltersTest.xml

@@ -8,6 +8,8 @@
 <tests xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/testSchema.xsd">
     <test name="AdminCheckResultsOfColorAndOtherFiltersTest">
+        <magentoCLI command="cache:flush eav" stepKey="flushCache"/>
+        <magentoCLI command="indexer:reindex" stepKey="reindex"/>
         <!-- Open a category on storefront -->
         <actionGroup ref="StorefrontGoToCategoryPageActionGroup" after="seeSaveProductMessageThird" stepKey="goToCategoryPage">
             <argument name="categoryName" value="$$createCategory.name$$"/>