Sync devFallbackParams when generateStaticParams change (#85741)
Since `generateStaticParams` runs in the background, when accessing the
`devFallbackParams` during the render, it is still set to the previous
result from the cache. Therefore, when the result has changed, re-render
the RSC to sync the `devFallbackParams` with the new result.
Closes NAR-491
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Co-authored-by: Josh Story <story@hey.com>