Improve redemption request proposal event deduplication

[pdyraga]

The deduplicator for redemption proposal events takes into account redeemer output script and redemption TX fee:

keep-core/pkg/tbtc/deduplicator.go

Lines 203 to 208 in c83fc9a

	var buffer bytes.Buffer
	buffer.Write(newProposal.WalletPublicKeyHash[:])
	for _, script := range newProposal.RedeemersOutputScripts {
	buffer.Write(script)
	}
	buffer.Write(newProposal.RedemptionTxFee.Bytes())

If the given redeemer is the only one redeeming for the last few hours and the Bitcoin TX fee estimation did not change, the redemption proposal for the second (valid!) redemption request will be ignored as a duplicate.

One possible option to fix this could be to shorten the caching period for this particular event. There may be better solutions but I can't think of any right now.

[erdogan]

@lukasz-zimnoch, this was opened by Piotr but did not have an owner. Temporarily tagging you here, feel free to reassign or deprioritize if this is not urgent

[lukasz-zimnoch]

No longer relevant due to: keep-network/tbtc-v2#737