Fix documentation of localization related editor settings

[timothyqiu]

• interface/editor/localize_settings:
  • It's not dedicated to the Editor Settings dialog. It's used by most EditorInspector-based editor UI. Mainly Project Settings and Editor Settings, but also used in places like the advanced import settings.
  • It's not disabled by default.
• interface/inspector/default_property_name_style
  • Raw is snake_case only, not related to GDScript vs C#.
  • Capitalized is not simply String.capitalize. Extra care is taken, like capitalization of macOS and special handling of articles and conjunctions.

Also did a bit rewording. Previously, it sounds like localize_settings and default_property_name_style are a base setting and an override. But they control different parts of the editor although both related to EditorInspector (the control).

[akien-mga]

Thanks!