fix initial load 404 scenarios in data mode

[brophdawg11]

Closes #12995

Best viewed with whitespace hidden: https://github.com/remix-run/react-router/pull/13500/files?w=1

[changeset-bot]

🦋 Changeset detected

Latest commit: fd58563

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 11 packages

Name	Type
react-router	Patch
@react-router/architect	Patch
@react-router/cloudflare	Patch
@react-router/dev	Patch
react-router-dom	Patch
@react-router/express	Patch
@react-router/node	Patch
@react-router/serve	Patch
@react-router/fs-routes	Patch
@react-router/remix-routes-option-adapter	Patch
create-react-router	Patch

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[brophdawg11]

All this stuff after this initial 404 check is for checking fog of war and checking if we need to kick off any lazy/loader functions etc. But if this was an initial 404 and there is no fog of war implementation, we don't want to bother with any of that since we know we can just initialize with errors synchronously.

[github-actions]

🤖 Hello there,

We just published version 7.6.0 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[github-actions]

🤖 Hello there,

We just published version 7.6.1 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!