[2.4.8-beta2] Downgrade TinyMCE dependency from version 7 to version 6.8.5

Author: jayrangnani-gl

lib/web/mage/adminhtml/wysiwyg/tiny_mce/tinymceAdapter.js

@@ -668,11 +668,13 @@ define([
          */
         encodeDirectives: function (content) {
             // collect all HTML tags with attributes that contain directives
+            // eslint-disable-next-line no-useless-escape
             return content.gsub(/<([a-z0-9\-\_]+[^>]+?)([a-z0-9\-\_]+="[^"]*?\{\{.+?\}\}.*?".*?)>/i, function (match) {
                 var attributesString = match[2],
                     decodedDirectiveString;
-
                 // process tag attributes string
+                // eslint-disable-next-line no-useless-escape
+
                 attributesString = attributesString.gsub(/([a-z0-9\-\_]+)="(.*?)(\{\{.+?\}\})(.*?)"/i, function (m) {
                     decodedDirectiveString = encodeURIComponent(Base64.mageEncode(m[3].replace(/&quot;/g, '"') + m[4]));
 
@@ -691,11 +693,12 @@ define([
         decodeDirectives: function (content) {
             var directiveUrl = this.makeDirectiveUrl('%directive%').split('?')[0], // remove query string from directive
                 // escape special chars in directives url to use in regular expression
+                // eslint-disable-next-line no-useless-escape
                 regexEscapedDirectiveUrl = directiveUrl.replace(/([$^.?*!+:=()\[\]{}|\\])/g, '\\$1'),
                 regexDirectiveUrl = regexEscapedDirectiveUrl
                     .replace(
                         '%directive%',
-                        '([a-zA-Z0-9,_-]+(?:%2[A-Z]|)+\/?)(?:(?!").)*'
+                        '([a-zA-Z0-9,_-]+(?:%2[A-Z]|)+\/?)(?:(?!").)*' // eslint-disable-next-line no-useless-escape
                     ) + '/?(\\\\?[^"]*)?', // allow optional query string
                 reg = new RegExp(regexDirectiveUrl);