backport/stable2412: litep2p: Provide partial results to speedup GetRecord queries (#7192)

Backport #7099 into `stable2412` from lexnv.

See the
[documentation](https://github.com/paritytech/polkadot-sdk/blob/master/docs/BACKPORT.md)
on how to use this bot.

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Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>
Co-authored-by: Alexandru Vasile <60601340+lexnv@users.noreply.github.com>
Co-authored-by: Alexandru Vasile <alexandru.vasile@parity.io>
Co-authored-by: Egor_P <egor@parity.io>