Mark queries relating to Nav fallback as resolved to avoid network fetches

[getdave]

Essentially we need to update the work done here so that when we sideload the entity into state we also mark any resolvers as "done" with finishResolution.

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@youknowriad I am still sometimes seeing the getEntityRecord (singular) for the Post being triggered even though the entity has already been sideloaded into Core Data state.

Do you think I ought to call...

dispatch.finishResolution( 'getEntityRecord', [
	'postType',
	'wp_navigation',
	fallback?.id,
] );

...here to mark the query as resolved?

Originally posted by @getdave in #50032 (comment)