feat(mempool): priority nonce mempool option with tx replacement

[JayT106]

Description

Add a mempool option for app setup of the tx replacement rule based on tx priority comparing logic. The current implementation is always allowing the transaction to be replaced when the mempool has a transaction with the same sender and the nonce.

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[kocubinski]

So the intent here is to disallow tx replacement by [sender, nonce] by an arbitrary rule defined by the user of the mempool?

[JayT106]

So the intent here is to disallow tx replacement by [sender, nonce] by an arbitrary rule defined by the user of the mempool?

Correct, the application can setup a rule to replace the transaction when the transaction has the same sender&nonce instead of always being replaced.

[julienrbrt]

lgtm!

Can we add a changelog?

[JayT106]

lgtm!

Can we add a changelog?

done!

[alexanderbez]

@Mergifyio backport release/v0.47.x

[mergify]

backport release/v0.47.x

✅ Backports have been created

• #15126 feat(mempool): priority nonce mempool option with tx replacement (backport #14484) has been created for branch release/v0.47.x