Prevent click propogation when clicking 'mark as read' button
Prevent click propogation when clicking 'mark as read' button

Bug: T139339
Change-Id: I3a19a0d01b036fe3c0379e3a5bc0c3f0e5f9473e

wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo