Project manager crash on master

[KoBeWi]

Godot version:
2059528

Issue description:
When you run Godot, you get this error:

[0] ProjectList::set_order_option (x:\inne\godot\source\godot\editor\project_manager.cpp:1405)
[1] ProjectManager::_on_order_option_changed (x:\inne\godot\source\godot\editor\project_manager.cpp:2375)
[2] call_with_variant_args_helper<ProjectManager> (x:\inne\godot\source\godot\core\callable_method_pointer.h:139)
[3] call_with_variant_args<ProjectManager> (x:\inne\godot\source\godot\core\callable_method_pointer.h:161)
[4] CallableCustomMethodPointer<ProjectManager>::call (x:\inne\godot\source\godot\core\callable_method_pointer.h:177)
[5] Callable::call (x:\inne\godot\source\godot\core\callable.cpp:50)
[6] Object::emit_signal (x:\inne\godot\source\godot\core\object.cpp:1200)
[7] Object::emit_signal (x:\inne\godot\source\godot\core\object.cpp:1257)
[8] ProjectListFilter::_filter_option_selected (x:\inne\godot\source\godot\editor\project_manager.cpp:2743)
[9] ProjectListFilter::set_filter_option (x:\inne\godot\source\godot\editor\project_manager.cpp:2737)
[10] ProjectManager::ProjectManager (x:\inne\godot\source\godot\editor\project_manager.cpp:2503)
[11] Main::start (x:\inne\godot\source\godot\main\main.cpp:1931)
[12] widechar_main (x:\inne\godot\source\godot\platform\windows\godot_windows.cpp:160)
[13] _main (x:\inne\godot\source\godot\platform\windows\godot_windows.cpp:184)
[14] main (x:\inne\godot\source\godot\platform\windows\godot_windows.cpp:196)
[15] __scrt_common_main_seh (f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283)
[16] BaseThreadInitThunk

Works if project is edited directly without opening Project Manager.

[akien-mga]

Probably from #36758 #36426.

[kuruk-mm]

I could not reproduce it from Ubuntu 16.04

What OS are you using? This happens when you open the Project Manager?

I tried, sorting the projects by name, last edit, etc.

[KoBeWi]

I'm using Windows 10.

[akien-mga]

I couldn't reproduce it initially, but I found out how to do it. You need to change the default project sorting option (which is saved in editor settings). It then crashes next time you open it.

[akien-mga]

@kuruk-mm It's similar to #36613, the signal is fired too early after changing to callable_mp, and the callback method accesses a child node which is not in tree yet.