Fixes scrolling of nickname drawer

Sources/AppNavigation/CustomTransitions/BottomTransition.swift

 import UIKit
-import Combine
 
 final class BottomTransition: NSObject, UIViewControllerAnimatedTransitioning {
   enum Direction {
@@ -9,11 +8,10 @@ final class BottomTransition: NSObject, UIViewControllerAnimatedTransitioning {
 
   let isDismissableOnBackground: Bool
   var direction: Direction = .present
-  private let onDismissal: (() -> Void)?
+  private let onDismissal: () -> Void
   private weak var darkOverlayView: UIControl?
   private weak var topConstraint: NSLayoutConstraint?
   private weak var bottomConstraint: NSLayoutConstraint?
-  private var cancellables = Set<AnyCancellable>()
 
   private var presentedConstraints: [NSLayoutConstraint] = []
   private var dismissedConstraints: [NSLayoutConstraint] = []
@@ -21,7 +19,7 @@ final class BottomTransition: NSObject, UIViewControllerAnimatedTransitioning {
 
   init(
     _ isDismissableOnBackground: Bool = true,
-    onDismissal: (() -> Void)?
+    onDismissal: @escaping () -> Void
   ) {
     self.onDismissal = onDismissal
     self.isDismissableOnBackground = isDismissableOnBackground
@@ -123,7 +121,7 @@ final class BottomTransition: NSObject, UIViewControllerAnimatedTransitioning {
       },
       completion: { [weak self] _ in
         context.completeTransition(true)
-        self?.onDismissal?()
+        self?.onDismissal()
       }
     )
   }