[FIX] web_editor: traceback after clicking crop button.

Before this commit:

After selecting an image and clicking on crop button, crop widget displays and
vanish immediately and crop does not work. After clicking on screen, it raises
an error (Cannot read properties of null (reading 'removeChild').

After this commit:

The crop button works fine without raising any traceback.

Task-2804892

X-original-commit: 1ab1c15386f778b04eb78f26b1e0934f3329c6af
Part-of: odoo/odoo#90401

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

@@ -1299,7 +1299,9 @@ const Wysiwyg = Widget.extend({
             if (!this.lastMediaClicked) {
                 return;
             }
-            new weWidgets.ImageCropWidget(this, this.lastMediaClicked).appendTo(this.$editable);
+            new weWidgets.ImageCropWidget(this, this.lastMediaClicked).appendTo(this.odooEditor.document.body);
+            this.odooEditor.toolbarHide();
+            $(this.lastMediaClicked).on('image_cropper_destroyed', () => this.odooEditor.toolbarShow());
         });
         $toolbar.find('#image-transform').click(e => {
             if (!this.lastMediaClicked) {