bug(demo-app-playgound): Mobile --> isDragging chip does not change color while dragging

[Achilles1515]

Title pretty much says it all.

Not sure if this is just iOS or specific to iOS 14 - haven't dug into any of the code yet.
EDIT: Is reproducible with Chrome simulating a mobile device.

Video demonstration:

[llorenspujol]

Thanks for the report! It also happens in my Android phone, I am quite curios on why this is happening. I will check it shortly.

[Achilles1515]

onDragStarted(event: KtdDragStart) {
      console.log(NgZone.isInAngularZone()); // outputs `true` on desktop, `false` on mobile
      this.isDragging = true;
    }

[llorenspujol]

I see that touch event from dragStart$ is outside the zone (which is expected) but it never re-enters. dragStarted event should be always inside the zone by default, and with that returning always 'true' in your test.

Do you want to do a Merge request with de fix? @Achilles1515

Overall what needs to be done is ensure that the event dragStarted is inside the zone.

[llorenspujol]

I've fixed it since I want to include this bug solved into the next release with the scroll feature, here it is if you want to check: 51d7d76

Thank you:)