### Godot version

4.0.dev (d0398f62f0)

### System information

Windows 10

### Issue description

`PlaceholderTexture2D::size` property is registered as a `Vector2I`: https://github.com/godotengine/godot/blob/0daa86d70e7338506c37bee6b6e0c4aba7255d68/scene/resources/texture.cpp#L3389  
It should be a `Vector2`, as setter method use a `Vector2` and so parent class getter method.

### Steps to reproduce

N/A

### Minimal reproduction project

N/A
wd[i * 3 + 1] = 0;
			}
		}
		if (_curve_z.is_valid()) {
			Curve &curve_z = **_curve_z;
			for (int i = 0; i < _width; ++i) {
				float t = i / static_cast<float>(_width);
				wd[i * 3 + 2] = curve_z.sample_baked(t);
			}
		} else {
			for (int i = 0; i < _width; ++i) {
				wd[i * 3 + 2] = 0;
			}
		}
	}
	Ref<Image> image = memnew(Image(_width, 1, false, Image::FORMAT_RGBF, data));
	if (_texture.is_valid()) {
		if (_current_width != _width) {
			RID new_texture = RS::get_singleton()->texture_2d_create(image);
			RS::get_singleton()->texture_replace(_texture, new_texture);
		} else {
			RS::get_singleton()->texture_2d_update(_texture, image);
		}
	} else {
		_texture = RS::get_singleton()->texture_2d_create(image);
	}
	_current_width = _width;
	emit_changed();
}
Ref<Curve> CurveXYZTexture::get_curve_x() const {