fix cordova.plugins.iosrtc.observeVideo MutationObserver issue with srcObject using loadstart and emptied events that get triggered
fix cordova.plugins.iosrtc.observeVideo MutationObserver issue with srcObject using loadstart and emptied events that get triggered

eface2face/cordova-plugin-iosrtc,hit0907/cordova-plugin-iosrtc,BasqueVoIPMafia/cordova-plugin-iosrtc,eface2face/cordova-plugin-iosrtc,hit0907/cordova-plugin-iosrtc,hit0907/cordova-plugin-iosrtc,BasqueVoIPMafia/cordova-plugin-iosrtc,eface2face/cordova-plugin-iosrtc,BasqueVoIPMafia/cordova-plugin-iosrtc