verify gpu_images are loaded

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https://github.com/mosure/bevy_gaussian_splatting/blob/d7ae5c045fb3101521bd604ce46c255dd94dd4f3/src/render/texture.rs#L124

        &TextureBuffers,
    )>,
) {
    // TODO: verify gpu_images are loaded

    for (entity, texture_buffers,) in clouds.iter() {
        #[cfg(feature = "f16")]
        let bind_group = render_device.create_bind_group(