Fixes building mono release templates

(cherry picked from commit a77f633161)

modules/mono/csharp_script.cpp

@@ -2629,7 +2629,9 @@ bool CSharpScript::_get_member_export(IMonoClassMember *p_member, bool p_inspect
 		return true;
 	}
 
+#ifdef TOOLS_ENABLED
 	MonoObject *attr = p_member->get_attribute(CACHED_CLASS(ExportAttribute));
+#endif
 
 	PropertyHint hint = PROPERTY_HINT_NONE;
 	String hint_string;

modules/mono/mono_gd/gd_mono.cpp

@@ -425,10 +425,10 @@ void GDMono::initialize_load_assemblies() {
 #if defined(TOOLS_ENABLED)
 	bool tool_assemblies_loaded = _load_tools_assemblies();
 	CRASH_COND_MSG(!tool_assemblies_loaded, "Mono: Failed to load '" TOOLS_ASM_NAME "' assemblies.");
-#endif
 
 	if (Main::is_project_manager())
 		return;
+#endif
 
 	// Load the project's main assembly. This doesn't necessarily need to succeed.
 	// The game may not be using .NET at all, or if the project does use .NET and