[Move] Add poseidon base cost (#24445)

## Description 

Update poseidon_bn254_cost_base.

## Test plan 

N/A

---

## Release notes

Check each box that your changes affect. If none of the boxes relate to
your changes, release notes aren't required.

For each box you select, include information after the relevant heading
that describes the impact of your changes that a user might notice and
any actions they must take to implement updates.

- [ ] Protocol: 
- [ ] Nodes (Validators and Full nodes): 
- [ ] gRPC:
- [ ] JSON-RPC: 
- [ ] GraphQL: 
- [ ] CLI: 
- [ ] Rust SDK:
- [ ] Indexing Framework:

Author: jonas-lj

crates/sui-protocol-config/src/lib.rs

@@ -4263,6 +4263,8 @@ impl ProtocolConfig {
                     cfg.dynamic_field_borrow_child_object_child_ref_cost_per_byte = Some(1);
                     cfg.dynamic_field_remove_child_object_child_cost_per_byte = Some(1);
                     cfg.feature_flags.enable_ptb_execution_v2 = true;
+
+                    cfg.poseidon_bn254_cost_base = Some(260);
                 }
                 // Use this template when making changes:
                 //

crates/sui-protocol-config/src/snapshots/sui_protocol_config__test__Mainnet_version_104.snap

@@ -320,6 +320,7 @@ hash_blake2b256_data_cost_per_block: 2
 hash_keccak256_cost_base: 10
 hash_keccak256_data_cost_per_byte: 2
 hash_keccak256_data_cost_per_block: 2
+poseidon_bn254_cost_base: 260
 poseidon_bn254_cost_per_block: 388
 group_ops_bls12381_decode_scalar_cost: 7
 group_ops_bls12381_decode_g1_cost: 2848

crates/sui-protocol-config/src/snapshots/sui_protocol_config__test__Testnet_version_104.snap

@@ -321,6 +321,7 @@ hash_blake2b256_data_cost_per_block: 2
 hash_keccak256_cost_base: 10
 hash_keccak256_data_cost_per_byte: 2
 hash_keccak256_data_cost_per_block: 2
+poseidon_bn254_cost_base: 260
 poseidon_bn254_cost_per_block: 388
 group_ops_bls12381_decode_scalar_cost: 7
 group_ops_bls12381_decode_g1_cost: 2848