[RN] Add ability to enable /disable the toolbox (Coding style: comments, consistency)

react/features/toolbox/components/Toolbox.native.js

         _audioOnly: PropTypes.bool,
 
         /**
-         * Flag showing whether the toolbox is enabled or not.
+         * The indicator which determines whether the toolbox is enabled.
          */
         _enabled: PropTypes.bool,
 
         _audioOnly: Boolean(conference.audioOnly),
 
         /**
-         * The indicator which determines whether the toolbox is enabled or not.
+         * The indicator which determines whether the toolbox is enabled.
          *
          * @private
          * @type {boolean}