The `Inheritance class tree` page contains outdated information

**Your Godot version:** master (latest)

**Issue description:** Currently there's references to `IntArray`, `StringArray`, `RealArray`, `RawArray`, `Vector2Array`, `Vector3Array`, `ColorArray` types that have been renamed in https://github.com/godotengine/godot/pull/56224 PR to `Packed*Array`. Other then previously mentioned types, (AFAIK) there's nothing else outdated, will edit issue description if needed.

**URL to the documentation page:** https://docs.godotengine.org/en/latest/engine_details/architecture/inheritance_class_tree.html

Open the linked Inheritance class tree documentation page and locate the references to IntArray, StringArray, RealArray, RawArray, Vector2Array, Vector3Array, and ColorArray. Update those names to their Packed*Array forms, then review the rendered page and search it to confirm the outdated names are gone.

Written by the indexing model from the issue text.