### 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
return size.x;
}
int PlaceholderTextureLayered::get_height() const {
	return size.y;
}
int PlaceholderTextureLayered::get_layers() const {
	return layers;
}
bool PlaceholderTextureLayered::has_mipmaps() const {
	return false;
}
Ref<Image> PlaceholderTextureLayered::get_layer_data(int p_layer) const {
	return Ref<Image>();
}
void PlaceholderTextureLayered::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_size", "size"), &PlaceholderTextureLayered::set_size);
	ClassDB::bind_method(D_METHOD("get_size"), &PlaceholderTextureLayered::get_size);
	ClassDB::bind_method(D_METHOD("set_layers", "layers"), &PlaceholderTextureLayered::set_layers);
	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2I, "size", PROPERTY_HINT_NONE, "suffix:px"), "set_size", "get_size");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "layers", PROPERTY_HINT_RANGE, "1,4096"), "set_layers", "get_layers");
}
PlaceholderTextureLayered::PlaceholderTextureLayered(LayeredType p_type) {
	layered_type = p_type;
	rid = RS::get_singleton()->texture_2d_layered_placeholder_create(RS::TextureLayeredType(layered_type));
}
PlaceholderTextureLayered::~PlaceholderTextureLayered() {
	RS::get_singleton()->free(rid);
}