Cleanup fused updates

Passed Non-regression STC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 70656 W: 18257 L: 18077 D: 34322
Ptnml(0-2): 217, 7912, 18879, 8114, 206
https://tests.stockfishchess.org/tests/view/67e23ae78888403457d876d4

closes https://github.com/official-stockfish/Stockfish/pull/5941

No functional change

src/types.h

@@ -38,6 +38,7 @@
 
     #include <cassert>
     #include <cstdint>
+    #include <type_traits>
 
     #if defined(_MSC_VER)
         // Disable some silly and noisy warnings from MSVC compiler
@@ -429,6 +430,14 @@ class Move {
     std::uint16_t data;
 };
 
+template<typename T, typename... Ts>
+struct is_all_same {
+    static constexpr bool value = (std::is_same_v<T, Ts> && ...);
+};
+
+template<typename... Ts>
+constexpr auto is_all_same_v = is_all_same<Ts...>::value;
+
 }  // namespace Stockfish
 
 #endif  // #ifndef TYPES_H_INCLUDED