Template: Unable to add content to Canvas when saved template lacks widgets

[ifarzana]

CMS version: 4.1.2

Context:
When a template is saved with global elements and the Include Widgets option is unchecked during the save process, a console error appears when attempting to add any content to the Canvas later, while the template is in use. This issue seems tied to how global elements are treated during the template save process when widgets are excluded.

Steps to Reproduce:

• Add a layout and add global elements such as Text
• Publish and Save the layout as a template.
• Ensure the Include Widgets option is unchecked.
• Create a new layout from the saved template.
• Attempt to add content to the Canvas or global elements in the new layout.

Expected Behaviour

• Users should be able to add content to global elements/images/playlist
• Canvas should not be retained when the option is not checked

Actual Behaviour
Widgets cannot be added to the Canvas

[maurofmferrao]

When a Layout is saved as Template without widgets, and it has Canvas elements, the Canvas widget is removed but not the Canvas region, and the Editor always expects a Canvas Region to have the widget present.