[TRACKER] Bugs due to changes in Engine APIs in Visualscripting

**Godot version:**
master

**Issue description:**
This is a list of things that have changed in the API that need some kind of change inside of Visual Scripting system to be fixed and also the bugs/regressions introduced in the process.

I had been holding off on further PRs for Visual Script because of the breaking changes that are in progress in the API of the system itself, but now that the refactors have progressed as far I believe listing them would really make fixing them and/or working on improvements much easier.

- [x] Changes to Variant Types. (constructors/destructors/conversions)
- [ ] Regression the update_member method bind in VisualScriptEditor
- [ ] Additional types/type changes
- [ ] Multi-window(this should hopefully work when GDScript Editor get done)
- [ ] Refactoring of signal system

Feel free to mention other things that may have been broken during the course of refactors or if something else should be changed to keep Visual Scripting better inline with the Engine APIs itself.

**Related PRs and Issues:**
https://github.com/godotengine/godot/pull/37053