refactor: clean up flashblocks context in payload builder (#297)

Author: noot

crates/op-rbuilder/src/builders/context.rs

@@ -74,6 +74,14 @@ pub struct OpPayloadBuilderCtx<ExtraCtx: Debug + Default = ()> {
 }
 
 impl<ExtraCtx: Debug + Default> OpPayloadBuilderCtx<ExtraCtx> {
+    pub(super) fn with_cancel(self, cancel: CancellationToken) -> Self {
+        Self { cancel, ..self }
+    }
+
+    pub(super) fn with_extra_ctx(self, extra_ctx: ExtraCtx) -> Self {
+        Self { extra_ctx, ..self }
+    }
+
     /// Returns the parent block the payload will be build on.
     pub fn parent(&self) -> &SealedHeader {
         &self.config.parent_header
@@ -340,7 +348,7 @@ impl<ExtraCtx: Debug + Default> OpPayloadBuilderCtx<ExtraCtx> {
         let tx_da_limit = self.da_config.max_da_tx_size();
         let mut evm = self.evm_config.evm_with_env(&mut *db, self.evm_env.clone());
 
-        info!(
+        debug!(
             target: "payload_builder",
             message = "Executing best transactions",
             block_da_limit = ?block_da_limit,