C#: Fix editor integration breaking and causing error spam when reloading assemblies fails

- Do not reload scripts from non-collectible assemblies
- Do not load GodotTools as collectible
- Do not attempt to reload the same project assembly forever

main/main.cpp

@@ -2756,6 +2756,7 @@ bool Main::start() {
 		// Default values should be synced with mono_gd/gd_mono.cpp.
 		GLOBAL_DEF("dotnet/project/assembly_name", "");
 		GLOBAL_DEF("dotnet/project/solution_directory", "");
+		GLOBAL_DEF(PropertyInfo(Variant::INT, "dotnet/project/assembly_reload_attempts", PROPERTY_HINT_RANGE, "1,16,1,or_greater"), 3);
 #endif
 
 		Error err;