update moko widget bottomsheet weak ref with controller not create at memory

Author: VashenkoNikita

widgets-bottomsheet/src/iosMain/swift/BottomSheetController.swift

@@ -9,7 +9,7 @@ private var AssociatedDelegateHandle: UInt8 = 0
 
 @objc public class BottomSheetController: NSObject, FloatingPanelControllerDelegate {
 
-  private weak var controller: FloatingPanelController?
+  private var controller: FloatingPanelController?
   private var onDismiss: ((Bool) -> Void)?
 
   @objc public func show(