Fog of war loading state on initial render

[Nirva-Software]

Closes #14556

Expected Behavior

Expected behavior is to have the 'Navigation state' set to 'loading' and the content displaying 'Loading...' during the first few seconds when the route is loaded.

Actual Behavior

The 'Navigation state' stays at 'idle' and the content displays 'Not found'. After a few seconds, the content changes to the actual content of the page.

Includes modifications of lazy-discovery-test to reproduce/check that the issue is fixed.

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Latest commit: 7ee7628

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[brophdawg11]

Thank you for the PR, but this fix isn't quite right as before the router is initialized we don't consider it a navigation. I have an alternative fix for this in #14740