Related to #55020, I propose moving the gallery block's "Link to" control from the inspector to a more familiar, and consistent, link control in the block toolbar. This would consolidate the varying linking controls found in image and galleries today, while also making way for applying "Expand on click" to all images within a gallery block.

A follow-up to this would be to include "Expand on click" at the gallery parent level here, just like single image blocks will have in #55020.

Before

Proposed