Add disablepictureinpicture attribute to PiP feature (#1154)

This doesn't change the computed status.

Author: foolip

features/picture-in-picture.dist.yml

@@ -33,6 +33,7 @@ compat_features:
   - api.PictureInPictureWindow.resize_event
   - api.PictureInPictureWindow.width
   - api.ShadowRoot.pictureInPictureElement
+  - html.elements.video.disablepictureinpicture
   # Later additions:
   # - api.PictureInPictureEvent
   # - api.PictureInPictureEvent.PictureInPictureEvent

features/picture-in-picture.yml

@@ -22,6 +22,7 @@ compat_features:
   - api.PictureInPictureWindow.resize_event
   - api.PictureInPictureWindow.width
   - api.ShadowRoot.pictureInPictureElement
+  - html.elements.video.disablepictureinpicture
   # Later additions:
   # - api.PictureInPictureEvent
   # - api.PictureInPictureEvent.PictureInPictureEvent