Add unregisterForPreviewingWithContext

ios/RCCNavigationController.m

@@ -172,6 +172,8 @@ - (void)performAction:(NSString*)performAction actionParams:(NSDictionary*)actio
       if ([self.topViewController isKindOfClass:[RCCViewController class]])
       {
         RCCViewController *topViewController = ((RCCViewController*)self.topViewController);
+        topViewController.previewController = nil;
+        [topViewController.navigationController unregisterForPreviewingWithContext:topViewController.previewContext];
         viewController.previewActions = previewActions;
         viewController.previewCommit = actionParams[@"previewCommit"] ? [actionParams[@"previewCommit"] boolValue] : YES;
         NSNumber *previewHeight = actionParams[@"previewHeight"];
@@ -184,7 +186,7 @@ - (void)performAction:(NSString*)performAction actionParams:(NSDictionary*)actio
             [bridge.uiManager addUIBlock:^(__unused RCTUIManager *uiManager, NSDictionary<NSNumber *, UIView *> *viewRegistry) {
               UIView *view = viewRegistry[previewViewID];
               topViewController.previewView = view;
-              [topViewController registerForPreviewingWithDelegate:(id)topViewController sourceView:view];
+              topViewController.previewContext = [topViewController registerForPreviewingWithDelegate:(id)topViewController sourceView:view];
             }];
           });
           topViewController.previewController = viewController;

ios/RCCViewController.h

@@ -22,6 +22,7 @@ extern NSString* const RCCViewControllerCancelReactTouchesNotification;
 @property (nonatomic) UIView *previewView;
 @property (nonatomic) NSArray *previewActions;
 @property (nonatomic) BOOL previewCommit;
+@property (nonatomic) id previewContext;
 
 + (UIViewController*)controllerWithLayout:(NSDictionary *)layout globalProps:(NSDictionary *)globalProps bridge:(RCTBridge *)bridge;