Removed display of brief article description in popovers #1276 (#1278)

Signe off by @THEBOSS0369

www/js/lib/popovers.js

@@ -99,12 +99,20 @@ function getArticleLede (href, baseUrl, articleDocument, archive) {
 
 // Helper function to clean up the lede content
 function cleanUpLedeContent (node) {
+    // Define an array of exclusion filters
+    // (note `.exclude-this-class` is a dummy class used as an example for any future exclusion filters)
+    const exclusionFilters = ['#pcs-edit-section-title-description', '.exclude-this-class'];
+    // Construct the `:not()` CSS exclusion selector list
+    const notSelector = exclusionFilters.map(filter => `:not(${filter})`).join('');
+
     // Remove all standalone style elements from the given DOM node, because their content is shown by innerText and textContent
     const styleElements = Array.from(node.querySelectorAll('style'));
     styleElements.forEach(style => {
         style.parentNode.removeChild(style);
     });
-    const paragraphs = Array.from(node.querySelectorAll('p'));
+    // Apply this style-based exclusion filter to remove unwanted paragraphs in the popover
+    const paragraphs = Array.from(node.querySelectorAll(`p${notSelector}`));
+
     // Filter out empty paragraphs or those with less than 50 characters
     const parasWithContent = paragraphs.filter(para => {
         // DEV: Note that innerText is not supported in Firefox OS, so we need to use textContent as a fallback