Improved Transaction Forwarding (bp #13944) (#14194)

* Improved Transaction Forwarding (#13944)

* Forwarding

* Dedupe leaders

* Use consistent commitment for last_valid_slot in rpc send_transaction

* Plumb rpc send_transaction options into solana-validator

* Extend num slots banking-stage holds forwarded txs

Co-authored-by: Tyera Eulberg <tyera@solana.com>
(cherry picked from commit da7d1e2302)

# Conflicts:
#	cli/src/cli.rs
#	core/src/validator.rs
#	validator/src/main.rs

* Fix conflicts

Co-authored-by: sakridge <sakridge@gmail.com>
Co-authored-by: Tyera Eulberg <tyera@solana.com>

cli/src/cli.rs

@@ -506,6 +506,7 @@ impl CliConfig<'_> {
         config.commitment = CommitmentConfig::recent();
         config.send_transaction_config = RpcSendTransactionConfig {
             skip_preflight: true,
+            preflight_commitment: Some(CommitmentConfig::recent().commitment),
             ..RpcSendTransactionConfig::default()
         };
         config
@@ -1415,6 +1416,7 @@ fn do_process_deploy(
             config.commitment,
             RpcSendTransactionConfig {
                 skip_preflight: true,
+                preflight_commitment: Some(config.commitment.commitment),
                 ..RpcSendTransactionConfig::default()
             },
         )