fix: add default for treatment to support existing chainstate

Author: obycode

stackslib/src/chainstate/burn/operations/mod.rs

@@ -249,6 +249,7 @@ pub struct LeaderBlockCommitOp {
     /// of the PoX addresses active during the block commit.
     ///
     /// This value is set by the check() call, not during parsing.
+    #[serde(default = "default_treatment")]
     pub treatment: Vec<Treatment>,
 
     // PoX sunset burn
@@ -261,6 +262,10 @@ pub struct LeaderBlockCommitOp {
     pub burn_header_hash: BurnchainHeaderHash, // hash of the burn chain block header
 }
 
+fn default_treatment() -> Vec<Treatment> {
+    Vec::new()
+}
+
 #[derive(Debug, PartialEq, Clone, Eq, Serialize, Deserialize)]
 pub struct LeaderKeyRegisterOp {
     pub consensus_hash: ConsensusHash, // consensus hash at time of issuance