[release/10.0] Fix ProfileEnter when called on a foreign thread (#119349)

* Fix ProfileEnter when called on a foreign thread

When ProfileEnter is called on a foreign thread that the runtime has not
seen yet, which can happen for UnmanagedCallersOnly marked methods,
it crashes in the GCX_COOP_THREAD_EXISTS(GET_THREAD()); That was left in
by accident in my change I've made a long time ago and should not be
there.
This change removes that switch, we switch to cooperative mode later in
the ProfileEnter and setup the thread for runtime before that.

Close #115617

* Make ProfileLeave look the same

---------

Co-authored-by: Jan Vorlicek <janvorli@microsoft.com>

Author: github-actions[bot]

src/coreclr/vm/proftoeeinterfaceimpl.cpp

@@ -10666,9 +10666,7 @@ void __stdcall ProfilerUnmanagedToManagedTransitionMD(MethodDesc *pMD,
 // These do a lot of work for us, setting up Frames, gathering arg info and resolving generics.
   //*******************************************************************************************
 
-HCIMPL2_RAW(EXTERN_C void, ProfileEnter, UINT_PTR clientData, void * platformSpecificHandle)
-GCX_COOP_THREAD_EXISTS(GET_THREAD());
-HCIMPL_PROLOG(ProfileEnter)
+HCIMPL2(EXTERN_C void, ProfileEnter, UINT_PTR clientData, void * platformSpecificHandle)
 {
     FCALL_CONTRACT;
 
@@ -10844,12 +10842,12 @@ HCIMPL_PROLOG(ProfileEnter)
 }
 HCIMPLEND
 
-HCIMPL2_RAW(EXTERN_C void, ProfileLeave, UINT_PTR clientData, void * platformSpecificHandle)
-GCX_COOP();
-HCIMPL_PROLOG(ProfileLeave)
+HCIMPL2(EXTERN_C void, ProfileLeave, UINT_PTR clientData, void * platformSpecificHandle)
 {
     FCALL_CONTRACT;
 
+    GCX_COOP();
+
 #ifdef PROFILING_SUPPORTED
 
 #ifdef PROF_TEST_ONLY_FORCE_ELT