SEUIIntentTarget+Simplified.m

#import <objc/runtime.h>

@interface UIViewController (SEUIIntentTarget_SWIZZLE)
- (UIResponder *)SEUI_originalNextResponder;
@end

@interface SEUIIntentTarget ()
@property (nonatomic, weak, nullable) UIViewController *owningViewController;
@end

@implementation SEUIIntentTarget

- (UIResponder *)nextResponder
{
    return [self.owningViewController SEUI_originalNextResponder];
}

@end

@implementation UIViewController (SEUIIntentTarget)

- (SEUIIntentTarget *)SEUI_intentTargetIfLoaded
{
    return objc_getAssociatedObject(self, @selector(SEUI_intentTarget));
}

- (SEUIIntentTarget *)SEUI_intentTarget
{
    return [self SEUI_intentTargetIfLoaded] ?: ({
        SEUIIntentTarget *target = [[SEUIIntentTarget alloc] init];
        target.owningViewController = self;
        objc_setAssociatedObject(self, @selector(SEUI_intentTarget), target, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
        target;
    });
}

@end

@implementation UIViewController (SEUIIntentTarget_SWIZZLE)

+ (void)load
{
    SEUISwizzle(self, @selector(nextResponder), @selector(SEUIIntentTarget_nextResponder));
}

- (UIResponder *)SEUIIntentTarget_nextResponder
{
    return [self SEUI_intentTargetIfLoaded] ?: [self SEUIIntentTarget_nextResponder];
}

- (UIResponder *)SEUI_originalNextResponder
{
    return [self SEUIIntentTarget_nextResponder];
}

@end