fix: ensure split flight returns root render and skip redundant getExpiration
- Remove NEXT_ROUTER_STATE_TREE_HEADER from internal request to ensure
root render, allowing client to use navigateToSeededRoute directly
- Skip getExpiration when previouslyRevalidatedTags is set since
isRecentlyRevalidatedTag already handles tag checking
- Filter tags to only forward updateTag() calls (profile === undefined)
- Check for ActionDidRevalidateDynamicOnly for refresh() detection
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>