Thumbnail CSS rule negatively affecting Vanilla UI by cropping thumbnails

[rocketgarden]

The recently added CSS rule

.thumbnail-item > img {
  width: auto !important;
  height: auto !important;
}

Is causing thumbnails in the txt2image tab to crop to square, which is undesirable (since one presumably wants to see the entire image they have just generated, at a glance).

This was recently reported in the WebUI repo but seems to be caused by this plugin.
AUTOMATIC1111/stable-diffusion-webui#10827