### Godot version

9f9210e60cddb2fa82ce5f7d71fcba340f2edbd1

### System information

Windows 11

### Issue description

I found that one of particles shaders in my project begin working incorrectly after the recent fixes. I've bisected it to 9f9210e60cddb2fa82ce5f7d71fcba340f2edbd1.

Before:
![image](https://github.com/godotengine/godot/assets/3036176/556bb0ed-6214-42ce-b194-8b54b0349b18)


After:
![image](https://github.com/godotengine/godot/assets/3036176/b3fa0b8a-20a6-4c5a-aea7-3e1ec465ea3e)


### Steps to reproduce

Download the provided test project and compare changes with different version.

### Minimal reproduction project

[bug.zip](https://github.com/godotengine/godot/files/12476303/bug.zip)

GDCLASS(GradientTexture1D, Texture2D);
private:
	Ref<Gradient> gradient;
	bool update_pending = false;
	RID texture;
	int width = 256;
	bool use_hdr = false;
	void _queue_update();
	void _update();
protected:
	static void _bind_methods();
public:
	void set_gradient(Ref<Gradient> p_gradient);
	Ref<Gradient> get_gradient() const;
	void set_width(int p_width);
	int get_width() const override;
	void set_use_hdr(bool p_enabled);
	bool is_using_hdr() const;
	virtual RID get_rid() const override { return texture; }
	virtual int get_height() const override { return 1; }
	virtual bool has_alpha() const override { return true; }
	virtual Ref<Image> get_image() const override;
	void update_now();
	GradientTexture1D();
	virtual ~GradientTexture1D();
};
class GradientTexture2D : public Texture2D {