docs(demos): fix drag to create events with weekStartsOn

Closes #1121

Author: mattlewis92

projects/demos/app/demo-modules/drag-to-create-events/component.ts

@@ -61,6 +61,8 @@ export class DemoComponent {
 
   dragToCreateActive = false;
 
+  weekStartsOn: 0 = 0;
+
   constructor(private cdr: ChangeDetectorRef) {}
 
   startDragToCreate(
@@ -79,7 +81,9 @@ export class DemoComponent {
     this.events = [...this.events, dragToSelectEvent];
     const segmentPosition = segmentElement.getBoundingClientRect();
     this.dragToCreateActive = true;
-    const endOfView = endOfWeek(this.viewDate);
+    const endOfView = endOfWeek(this.viewDate, {
+      weekStartsOn: this.weekStartsOn
+    });
 
     fromEvent(document, 'mousemove')
       .pipe(

projects/demos/app/demo-modules/drag-to-create-events/template.html

@@ -58,5 +58,6 @@ <h3>{{ viewDate | calendarDate:('weekViewTitle') }}</h3>
   [viewDate]="viewDate"
   [events]="events"
   [hourSegmentTemplate]="weekViewHourSegmentTemplate"
+  [weekStartsOn]="weekStartsOn"
 >
 </mwl-calendar-week-view>