[dynarmic, macroHLE] Use faster ankerl for xbyak maps (#3716)

the nominal std::unordered_map<> isn't enough to warrant it's continued usage in xbyak internal structures, thus using ankerl should greatly remove a lot of indirection/stdc++ specific overhead from the usually poorly performant std::unordered_map

Both dynarmic and macroHLE should benefit greatly from a less-stupid unordered_dense

This should speedup both CPU and shader compilation latency (NOT BY A GREAT MARGIN) just enough to make loading zones in ToTK less horrific

Signed-off-by: lizzie <lizzie@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3716
Reviewed-by: crueter <crueter@eden-emu.dev>

src/dynarmic/tests/x64_cpu_info.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 /* This file is part of the dynarmic project.
  * Copyright (c) 2020 MerryMage
  * SPDX-License-Identifier: 0BSD
@@ -11,7 +14,7 @@
 #include <utility>
 
 #include <catch2/catch_test_macros.hpp>
-#include <xbyak/xbyak_util.h>
+#include "dynarmic/backend/x64/xbyak.h"
 
 TEST_CASE("Host CPU supports", "[a64]") {
     using Cpu = Xbyak::util::Cpu;