fix: sort imports to ensure consistent hash (#55358)
Files with modules loaded by `NextFlightClientEntryLoader` have inconsistent chunkhashes because of unpredictable order of modules loaded. Because of this issue, multi-server builds cannot be used properly
For example: `main-app`
Related issues:
https://github.com/vercel/next.js/issues/52827
https://github.com/vercel/next.js/issues/45659
