Fix Drag/Release Behavior in GUI and Photo Dome
Fix Drag/Release Behavior in GUI and Photo Dome

Fix to allow mouse release to propagate to scene to allow for release of camera observers. See: https://forum.babylonjs.com/t/ispointerblocker-improvement/31152/10?u=stevendelapena
BabylonJS/Babylon.js,sebavan/Babylon.js,RaananW/Babylon.js,sebavan/Babylon.js,sebavan/Babylon.js,BabylonJS/Babylon.js,BabylonJS/Babylon.js,RaananW/Babylon.js,RaananW/Babylon.js