fix: TypeError on Firefox

in Firefox when moving a marker a TypeError was thrown with:
invalid 'instanceof' operand window.TouchEvent

this just needs to separate the move event from the component from the
internal 'move' event fired afterwards so it doesn't loop.
This is now done by checking if originalEvent exists and checking its type

src/fragments/map-view/map-view.js

@@ -949,7 +949,7 @@ export default {
       // Only marker changes that are a result of user interaction are treated here.
       // With vue2-leaflet version 2.5.2 the event.originalEvent is not  an instance of
       // window.PointerEvent anymore and use parent window.MouseEvent instead
-      if (event.originalEvent instanceof window.MouseEvent || event.originalEvent instanceof window.TouchEvent) {
+      if (event.originalEvent?.type === 'mousemove') {
         clearTimeout(this.markerMoveTimeoutId)
         this.markerMoveTimeoutId = setTimeout(() => {
           this.markerDragEnd(event)