Avoid removing navigate from route loader

Which project does this relate to?

Router

Describe the bug

Currently the "navigate" property is marked as deprecated on the loader and it is advised to use throw redirect() instead. However I think this is a bug because there's a hug difference --> when we throw, we can not return loaded date from a root route while with the navigate property we get exactly this, we can navigate to a sub route after having loaded some data and return the actually loaded data so I think we need both features.

Your Example Website or App

https://stackoverflow.com/help/mcve

Steps to Reproduce the Bug or Issue

See the navigate property of the loader properties marked as deprecated

Expected behavior

Should not be marked deprecated and not be removed because it serves a completely different purpose than the throw redirect()

Screenshots or Videos

No response

Platform

• OS: macOS
• Browser: Chrome
• Version: Latest

Additional context

No response

No file or test is named. Start by locating the loader API definition and the deprecation for its navigate property, then compare its behavior with throw redirect(). Done means the navigate property remains available without deprecation while preserving loaded data from a root route; add or update coverage for that behavior.