Added tinymce de-focus toolbar hack for drawing editor load

The tinymce event system would not pick up the focus within the loaded
draw.io instance, after the drawing toolbar button was clicked, hence
the toolbar would hang around.

This adds a hack to dispatch a mousedown event on the body to get the
toolbar to hide.

For #3597

resources/js/wysiwyg/plugin-codeeditor.js

@@ -165,7 +165,6 @@ function register(editor, url) {
             showPopup(editor, textContent, '', (newCode, newLang) => {
                 const pre = doc.createElement('pre');
                 const code = doc.createElement('code');
-                console.log(newCode);
                 code.classList.add(`language-${newLang}`);
                 code.innerText = newCode;
                 pre.append(code);