Disabling in `initialize` while a template is being instantiated does not correctly disable nested elements

Description

When spawning a template, if any script inside the template disables the entity it is attached to immediately in initialize, then any nested elements to that entity are not disabled correctly. This leads to a broken enabled state, where children of the disabled entity are still enabled in the hierarchy.

Here is a link to a very simple project that reproduces this bug:
https://playcanvas.com/editor/project/1088612

I've reproduced the bug in both the Brave and Firefox browsers.

Steps to Reproduce

1. Open the project in the editor. Observe that the TemplateSpawner will spawn a template when initialized. This template includes multiple children that have scripts attached that will disable themselves in initialize.
2. Run the project.
3. The green box dissapears correctly. The red box does not dissapear like it is supposed to.

Start with the linked reproduction project and trace template instantiation, the TemplateSpawner, and scripts that disable their entities in initialize. Confirm the enabled-state behavior for nested elements, then verify that children of an entity disabled during initialization are also disabled.