Mention mempoolfullrbf in policy/mempool-replacements.md

Author: ariard

doc/policy/mempool-replacements.md

@@ -15,6 +15,8 @@ other consensus and policy rules, each of the following conditions are met:
 
    *Rationale*: See [BIP125
    explanation](https://github.com/bitcoin/bips/blob/master/bip-0125.mediawiki#motivation).
+   The Bitcoin Core implementation offers a node setting (`mempoolfullrbf`) to allow transaction
+   replacement without enforcement of the opt-in signaling rule.
 
 2. The replacement transaction only include an unconfirmed input if that input was included in
    one of the directly conflicting transactions. An unconfirmed input spends an output from a
@@ -74,3 +76,6 @@ This set of rules is similar but distinct from BIP125.
 
 * RBF enabled by default in the wallet GUI as of **v0.18.1** ([PR
   #11605](https://github.com/bitcoin/bitcoin/pull/11605)).
+
+* Full replace-by-fee enabled as a configurable mempool policy as of **v24.0** ([PR
+  #25353](https://github.com/bitcoin/bitcoin/pull/25353)).

doc/release-notes.md

@@ -86,6 +86,10 @@ Changes to GUI or wallet related settings can be found in the GUI or Wallet sect
 New settings
 ------------
 
+- A new `mempoolfullrbf` option has been added, which enables the mempool to
+  accept transaction replacement without enforcing the opt-in replaceability
+  signal. (#25353)
+
 Tools and Utilities
 -------------------