message: Removed redundant checks
  The logic only runs if there's a navigationEvent so there must be a stateContext
diff: @@ -143,7 +143,7 @@ class Scene extends React.Component<SceneProps, SceneState> {
  <BackButton onPress={this.handleBack} />
  <NavigationContext.Provider value={navigationEvent}>
  <Freeze freeze={freezable && crumbs.length !== crumb && navigationEvent
  - && (!stateContext?.['peek'] || stateContext['peekEvent'] !== this.props.navigationEvent)}>
  + && (!stateContext['peek'] || stateContext['peekEvent'] !== this.props.navigationEvent)}>
  <NVFreeze style={styles.scene}>
  {navigationEvent && this.props.renderScene(state, data)}
  </NVFreeze>
  