Merge bitcoin#25689: fuzz: Remove no-op SetMempoolConstraints

fa57c44 fuzz: Remove no-op SetMempoolConstraints (MacroFake)

Pull request description:

  Now that the mempool no longer uses the args manager (after commit e4e201d), there is no point setting the mempool limits after it is constructed.

  Fix that by setting them once right before the mempool is constructed.

ACKs for top commit:
  dongcarl:
    utACK fa57c44
  glozow:
    utACK fa57c44

Tree-SHA512: d236f9cdcee8c2076272b82c97f8a5942f1ecf119ab36edafd42088ef97554592348a61e1fbe504fd52b30301ef0177813042599ad12e8cb95b4a20586c85bb0

Author: claude

src/test/fuzz/tx_pool.cpp

@@ -129,7 +129,6 @@ FUZZ_TARGET(tx_pool_standard, .init = initialize_tx_pool)
     auto& chainstate{static_cast<DummyChainState&>(node.chainman->ActiveChainstate())};
 
     MockTime(fuzzed_data_provider, chainstate);
-    SetMempoolConstraints(*node.args, fuzzed_data_provider);
 
     // All RBF-spendable outpoints
     std::set<COutPoint> outpoints_rbf;
@@ -143,6 +142,7 @@ FUZZ_TARGET(tx_pool_standard, .init = initialize_tx_pool)
     // The sum of the values of all spendable outpoints
     constexpr CAmount SUPPLY_TOTAL{COINBASE_MATURITY * 50 * COIN};
 
+    SetMempoolConstraints(*node.args, fuzzed_data_provider);
     CTxMemPool tx_pool_{/*estimator=*/nullptr, /*check_ratio=*/1};
     MockedTxPool& tx_pool = *static_cast<MockedTxPool*>(&tx_pool_);
 
@@ -211,9 +211,6 @@ FUZZ_TARGET(tx_pool_standard, .init = initialize_tx_pool)
         if (fuzzed_data_provider.ConsumeBool()) {
             MockTime(fuzzed_data_provider, chainstate);
         }
-        if (fuzzed_data_provider.ConsumeBool()) {
-            SetMempoolConstraints(*node.args, fuzzed_data_provider);
-        }
         if (fuzzed_data_provider.ConsumeBool()) {
             tx_pool.RollingFeeUpdate();
         }
@@ -307,7 +304,6 @@ FUZZ_TARGET(tx_pool, .init = initialize_tx_pool)
     auto& chainstate{static_cast<DummyChainState&>(node.chainman->ActiveChainstate())};
 
     MockTime(fuzzed_data_provider, chainstate);
-    SetMempoolConstraints(*node.args, fuzzed_data_provider);
 
     std::vector<uint256> txids;
     for (const auto& outpoint : g_outpoints_coinbase_init_mature) {
@@ -319,6 +315,7 @@ FUZZ_TARGET(tx_pool, .init = initialize_tx_pool)
         txids.push_back(ConsumeUInt256(fuzzed_data_provider));
     }
 
+    SetMempoolConstraints(*node.args, fuzzed_data_provider);
     CTxMemPool tx_pool_{/*estimator=*/nullptr, /*check_ratio=*/1};
     MockedTxPool& tx_pool = *static_cast<MockedTxPool*>(&tx_pool_);
 
@@ -331,9 +328,6 @@ FUZZ_TARGET(tx_pool, .init = initialize_tx_pool)
         if (fuzzed_data_provider.ConsumeBool()) {
             MockTime(fuzzed_data_provider, chainstate);
         }
-        if (fuzzed_data_provider.ConsumeBool()) {
-            SetMempoolConstraints(*node.args, fuzzed_data_provider);
-        }
         if (fuzzed_data_provider.ConsumeBool()) {
             tx_pool.RollingFeeUpdate();
         }