refactor: Fix iwyu on node/chainstate

Author: MacroFake

src/node/chainstate.cpp

@@ -11,9 +11,11 @@
 #include <node/caches.h>
 #include <sync.h>
 #include <threadsafety.h>
+#include <tinyformat.h>
 #include <txdb.h>
 #include <uint256.h>
 #include <util/time.h>
+#include <util/translation.h>
 #include <validation.h>
 
 #include <algorithm>

src/node/chainstate.h

@@ -5,13 +5,13 @@
 #ifndef BITCOIN_NODE_CHAINSTATE_H
 #define BITCOIN_NODE_CHAINSTATE_H
 
+#include <util/translation.h>
 #include <validation.h>
 
 #include <cstdint>
 #include <functional>
-#include <optional>
+#include <tuple>
 
-class ChainstateManager;
 class CTxMemPool;
 
 namespace node {