### Godot version

v4.1.beta1.official [828ec2c5d]

### System information

Godot v4.1.beta1 - Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 2070 SUPER (NVIDIA; 30.0.14.7247) - AMD Ryzen 7 3700X 8-Core Processor (16 Threads)

### Issue description

Converting a project from Godot 3.5 to Godot 4.1 fails to convert the texture references on TouchScreenButton nodes. Before, my TouchScreenButton scene has a Normal and a Pressed texture assigned; after, the scene has no textures assigned!

This seems to be because the converter fails to update the TouchScreenButton node's `normal` and `pressed` properties to `texture_normal` and `texture_pressed`.

Expected behavior is, of course, that the textures convert properly.

### Steps to reproduce

1. Open repro project in Godot 3.5.*. Observe the graphics on the button in `TouchScreenButton.tscn`.
2. Convert the project to Godot 4.1.*. Observe the lack of graphics on the same button.

### Minimal reproduction project

[GD4 Touch Button Convert.zip](https://github.com/godotengine/godot/files/11928549/GD4.Touch.Button.Convert.zip)

public:
#ifdef TOOLS_ENABLED
	virtual Rect2 _edit_get_rect() const override;
	virtual bool _edit_use_rect() const override;
#endif
	void set_texture_normal(const Ref<Texture2D> &p_texture);
	Ref<Texture2D> get_texture_normal() const;
	void set_texture_pressed(const Ref<Texture2D> &p_texture_pressed);
	Ref<Texture2D> get_texture_pressed() const;
	void set_bitmask(const Ref<BitMap> &p_bitmask);
	Ref<BitMap> get_bitmask() const;
	void set_shape(const Ref<Shape2D> &p_shape);
	Ref<Shape2D> get_shape() const;
	void set_shape_centered(bool p_shape_centered);
	bool is_shape_centered() const;
	void set_shape_visible(bool p_shape_visible);
	bool is_shape_visible() const;
	void set_action(const String &p_action);
	String get_action() const;
	void set_passby_press(bool p_enable);
	bool is_passby_press_enabled() const;
	void set_visibility_mode(VisibilityMode p_mode);
	VisibilityMode get_visibility_mode() const;
	bool is_pressed() const;
	virtual Rect2 get_anchorable_rect() const override;
	TouchScreenButton();
};
VARIANT_ENUM_CAST(TouchScreenButton::VisibilityMode);
#endif