Divi Layout block doesn't work properly within a Lesson

[alexsanford]

Steps to Reproduce

1. Enable Divi Builder on Course and Lesson post types (Divi > Theme Options > Builder).
2. Create a new Course, and a new Lesson within that Course. Use the default editor for both.
3. Add some blocks to the top of the Lesson.
4. Add a "Divi Layout" block. Create a new layout in the builder.
5. Notice that the Layout block editor contains the full site layout, including the top menu, footers, comments, etc.
6. Add some elements, click the "..." button at the bottom, and click "Save & Exit".
7. In the Lesson editor, notice that the Divi Layout block contains all of the elements of the page.

What I Expected

The Divi Layout block to work like it does for regular posts. The builder should only contain elements that I add manually, and those should display in the block editor after saving.

What Happened Instead

The Divi Layout builder contains all elements from the page, and displays them in the block editor.

Screenshot / Video

https://vimeo.com/700840384/d11f7a0b9e

[renatho]

If the site uses WP 5.9+, the following snippet can be used as a workaround until it's fixed.

add_action(
	'template_redirect',
	function() {
		remove_filter( 'template_include', [ Sensei_Course_Theme_Compat::instance(), 'get_wrapper_template' ] );
	},
	11
);