As a follow-up to #54916 (comment) (and related to #50893) let's move the lightbox "Expand on click" control from the inspector to the existing link action control.

Why? You can only have one of these options selected at a time. Connecting them into one singular (and familiar) experience will help reduce confusion when attempting to link an image with the lightbox effect applied (or vise-versa).

Visuals

1. The LinkControl implementation for the image block, as detailed in Image and Media & Text blocks: Use LinkControl #50893, with the new control for "Expand on click".
2. The selected state indicating that the click action is set to "Expand on click". Removing should not close the link modal, but bring it back to the initial state above.