Hide feeds with muted video in certain cases and fix colors

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

src/components/views/voip/CallView.tsx

@@ -614,6 +614,7 @@ export default class CallView extends React.Component<IProps, IState> {
                 <CallViewSidebar
                     feeds={this.state.secondaryFeeds}
                     call={this.props.call}
+                    hideFeedsWithMutedVideo={!this.state.primaryFeed || this.state.primaryFeed?.isVideoMuted()}
                 />
             );
         }