Display error for Array.append(wrong_type) in case of typed arrays

[dodaucy]

Intended behavior: Array.append should display an error if called with a wrong type in case of typed arrays.

Actual behavior: No error highlighting in the editor.

Why this should be implemented: It helps identifying mistakes faster, that would raise an error on runtime. This is the already the case for overwriting an index like array[index] = wrong_value but not for array.append(wrong_type).

Godot version: 4.4.1 stable

Test project: godot_4.4.1_stable_array_typing_test.zip

[dalexeev]

• See GDScript 2.0: Typed arrays do not propagate type information through functions returning Variant godot#59721.