[mini] Add GC Unsafe transitions in mono_pmip (dotnet#57290)

Add a new mono_pmip_u that doesn't do the transition.

The intent is that Mono developers in the debugger can call still call
mono_pmip_u if the thread state machine is in a broken state.

Co-authored-by: lambdageek <lambdageek@users.noreply.github.com>

src/mono/mono/mini/mini-runtime.c

@@ -197,9 +197,23 @@ find_tramp (gpointer key, gpointer value, gpointer user_data)
 		ud->method = (MonoMethod*)key;
 }
 
+static char*
+mono_get_method_from_ip_u (void *ip);
+
 /* debug function */
 char*
 mono_get_method_from_ip (void *ip)
+{
+	char *result;
+	MONO_ENTER_GC_UNSAFE;
+	result = mono_get_method_from_ip_u (ip);
+	MONO_EXIT_GC_UNSAFE;
+	return result;
+}
+
+/* debug function */
+static char*
+mono_get_method_from_ip_u (void *ip)
 {
 	MonoJitInfo *ji;
 	MonoMethod *method;
@@ -272,6 +286,12 @@ mono_pmip (void *ip)
 	return mono_get_method_from_ip (ip);
 }
 
+G_GNUC_UNUSED char *
+mono_pmip_u (void *ip)
+{
+	return mono_get_method_from_ip_u (ip);
+}
+
 /**
  * mono_print_method_from_ip:
  * \param ip an instruction pointer address

src/mono/mono/mini/mini-runtime.h

@@ -567,6 +567,7 @@ const char*mono_ji_type_to_string           (MonoJumpInfoType type);
 void      mono_print_ji                     (const MonoJumpInfo *ji);
 MONO_API void      mono_print_method_from_ip         (void *ip);
 MONO_API char     *mono_pmip                         (void *ip);
+MONO_API char     *mono_pmip_u                       (void *ip);
 MONO_API int mono_ee_api_version (void);
 gboolean  mono_debug_count                  (void);