Prevent scrolling if event was canceled by inner handler

Since smooth-scroll event is attached to the body, another
handler may cancel the default behavior, but the event will
still bubble up to the body, triggering a page scroll.
It seems reasonable that if any inner event handle cancels
the default behavior that no scrolling should be triggered.

Author: mgreter

src/js/smooth-scroll/smooth-scroll.js

@@ -495,6 +495,9 @@
 			// Don't run if the user prefers reduced motion
 			if (reduceMotion(settings)) return;
 
+			// Don't run if event was canceled but still bubbled up
+			if (event.defaultPrevented) return;
+
 			// Don't run if right-click or command/control + click
 			if (event.button !== 0 || event.metaKey || event.ctrlKey) return;