Only abort deploys early in prepare_for_speculate

See: https://github.com/AleoHQ/snarkVM/issues/2451

A malicious validator can generate a transaction with mostly the same
transitions, which will be aborted causing the victim's transaction
to be filtered out and dropped.

synthesizer/src/vm/finalize.rs

@@ -852,9 +852,9 @@ impl<N: Network, C: ConsensusStorage<N>> VM<N, C> {
         // Initialize the list of deployment payers.
         let mut deployment_payers: IndexSet<Address<N>> = Default::default();
 
-        // Abort the transactions that are have duplicates or are invalid. This will prevent the VM from performing
-        // verification on transactions that would have been aborted in `VM::atomic_speculate`.
-        for transaction in transactions.iter() {
+        // Abort the deployments that are have duplicates or are invalid. This will prevent the VM from performing
+        // verification on deployments that would have been aborted in `VM::atomic_speculate`.
+        for transaction in transactions.iter().filter(|tx| tx.is_deploy()) {
             // Determine if the transaction should be aborted.
             match self.should_abort_transaction(
                 transaction,