support strHandlingFlags entry 0x2000000

this was added in the mpbiker update, and apparently disables traction control for bikes.

default vehicles using it include the hakuchou2 and sanctus.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=647f0d6622ef3b35bdc43b5b66e0ac5a805afd7c

components/gta-core-five/src/PatchHandlingFlag25.cpp

@@ -0,0 +1,33 @@
+#include "StdInc.h"
+#include "Hooking.h"
+
+static HookFunction hookFunction([]()
+{
+	static struct : jitasm::Frontend
+	{
+		void InternalMain() override
+		{
+			// test whether or not we have to skip
+			mov(rax, qword_ptr[rdi + 0x830]);				// rax = rdi+_CVehicle.handling
+			test(dword_ptr[rax + 0x120], 0x2000000);		// if (rax+_CHandlingData.strHandlingFlags & 0x2000000)
+			jnz("skip_entirely");							//     goto skip_entirely
+
+			// run original code
+			cmp(ebx, dword_ptr[rdi + 0xA98]);				// original code we overwrote
+			ret();											// return;
+
+			// skipping label
+			L("skip_entirely");								// skip_entirely:
+			mov(rax, qword_ptr[rsp]);						// rax = _ReturnAddress()
+			add(rax, 0x3E - 5);								// rax += (0x3E - 5)
+															// difference between end of CALL and the ending of the branch
+
+			mov(qword_ptr[rsp], rax);						// *_AddressOfReturnAddress() = rax
+			ret();											// return;
+		}
+	} tractionControlSkipStub;
+
+	auto location = hook::get_pattern("73 69 3B 9F ? ? 00 00 7D 0D", 0x6B);
+	hook::nop(location, 6);
+	hook::call(location, tractionControlSkipStub.GetCode());
+});