[FIX] web_editor: wrong focus detection in the editor

Issue detected with tests in the branch that replace deferred by native
Promise. Need to add isMedia to detect if the target is already a media
when focus the editor.

closes odoo/odoo#31632

Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>

addons/web_editor/static/src/js/wysiwyg/plugin/media.js

@@ -86,7 +86,7 @@ var MediaPlugin = AbstractPlugin.extend({
      * @param {Node} target
      */
     update: function (target) {
-        if (!target) {
+        if (!target || !dom.isMedia(target)) {
             return;
         }
         if (!this.options.displayPopover(target)) {

addons/web_editor/static/src/js/wysiwyg/wysiwyg.js

@@ -610,7 +610,7 @@ var Wysiwyg = Widget.extend({
         this._editableHasFocus = true;
         this._justFocused = true;
         setTimeout(function () {
-            self._justFocused = true;
+            self._justFocused = false;
         });
     },
     /**