GD-1057: Remove key modifiery arguments from the simulate key press/ed release methods

[MikeSchulze]

Refactoring Type

Code cleanup/organization

Current State

@abstract func simulate_key_pressed(key_code: int, shift_pressed := false, ctrl_pressed := false) -> GdUnitSceneRunner

@abstract func simulate_key_press(key_code: int, shift_pressed := false, ctrl_pressed := false) -> GdUnitSceneRunner

@abstract func simulate_key_release(key_code: int, shift_pressed := false, ctrl_pressed := false) -> GdUnitSceneRunner

Problems and Motivation

The functions are marked as deprecated, and we need to remove the modifier arguments.
For more details, see #1055

Proposed Changes

@abstract func simulate_key_pressed(key_code: int) -> GdUnitSceneRunner

@abstract func simulate_key_press(key_code: int) -> GdUnitSceneRunner

@abstract func simulate_key_release(key_code: int) -> GdUnitSceneRunner

Affected Areas

SceneRunner API

Backward Compatibility

Godot compatibility is not affected.

Implementation Approach

Remove the modifier arguments and fix the tests.

Benefits and Risks

No response

Developer Notes

No response