Problem

As reported in mpl-extensions/mpl-pan-zoom#8 by @antoniovazquezblanco the webagg backend (and I suspect also the nbagg backend) have no option to enable capturing scroll events. This means that it is impossible to implement scroll to zoom methods without also scrolling the page.

Proposed solution

Add an optional way to have the canvas capture mouse wheel events like we do in ipympl: https://github.com/matplotlib/ipympl/blob/9b85cab605c960365e4f217589f8aa7ac6c31274/src/mpl_widget.ts#L547-L551