fix(payload): emit events for Freeze payload outcomes (paradigmxyz#19435)

Co-authored-by: Matthias Seitz <[email protected]>

Author: avorylli

crates/payload/basic/src/better_payload_emitter.rs

@@ -38,9 +38,11 @@ where
         args: BuildArguments<Self::Attributes, Self::BuiltPayload>,
     ) -> Result<BuildOutcome<Self::BuiltPayload>, PayloadBuilderError> {
         match self.inner.try_build(args) {
-            Ok(BuildOutcome::Better { payload, cached_reads }) => {
-                let _ = self.better_payloads_tx.send(Arc::new(payload.clone()));
-                Ok(BuildOutcome::Better { payload, cached_reads })
+            Ok(res) => {
+                if let Some(payload) = res.payload().cloned() {
+                    let _ = self.better_payloads_tx.send(Arc::new(payload));
+                }
+                Ok(res)
             }
             res => res,
         }

crates/payload/basic/src/lib.rs

@@ -706,19 +706,32 @@ pub enum BuildOutcome<Payload> {
 }
 
 impl<Payload> BuildOutcome<Payload> {
-    /// Consumes the type and returns the payload if the outcome is `Better`.
+    /// Consumes the type and returns the payload if the outcome is `Better` or `Freeze`.
     pub fn into_payload(self) -> Option<Payload> {
         match self {
             Self::Better { payload, .. } | Self::Freeze(payload) => Some(payload),
             _ => None,
         }
     }
 
+    /// Consumes the type and returns the payload if the outcome is `Better` or `Freeze`.
+    pub const fn payload(&self) -> Option<&Payload> {
+        match self {
+            Self::Better { payload, .. } | Self::Freeze(payload) => Some(payload),
+            _ => None,
+        }
+    }
+
     /// Returns true if the outcome is `Better`.
     pub const fn is_better(&self) -> bool {
         matches!(self, Self::Better { .. })
     }
 
+    /// Returns true if the outcome is `Freeze`.
+    pub const fn is_frozen(&self) -> bool {
+        matches!(self, Self::Freeze { .. })
+    }
+
     /// Returns true if the outcome is `Aborted`.
     pub const fn is_aborted(&self) -> bool {
         matches!(self, Self::Aborted { .. })