fix(iOS): crash on reload (#35)

* fix(iOS): crash on reload

* Update TrueSheetView.swift

---------

Co-authored-by: Jovanni Lo <lodev09@gmail.com>

Author: hirbod

ios/TrueSheetView.swift

@@ -26,7 +26,7 @@ class TrueSheetView: UIView, RCTInvalidating, TrueSheetViewControllerDelegate {
 
   private var isPresented = false
   private var activeIndex: Int?
-  private var bridge: RCTBridge
+  private var bridge: RCTBridge?
   private var touchHandler: RCTTouchHandler
   private var viewController: TrueSheetViewController
 
@@ -143,7 +143,7 @@ class TrueSheetView: UIView, RCTInvalidating, TrueSheetViewControllerDelegate {
     guard let containerView else { return }
 
     let size = CGSize(width: width, height: containerView.bounds.height)
-    bridge.uiManager.setSize(size, for: containerView)
+    bridge?.uiManager.setSize(size, for: containerView)
   }
 
   func viewControllerWillAppear() {
@@ -297,7 +297,7 @@ class TrueSheetView: UIView, RCTInvalidating, TrueSheetViewControllerDelegate {
 
   @objc
   func setScrollableHandle(_ tag: NSNumber?) {
-    let view = bridge.uiManager.view(forReactTag: tag) as? RCTScrollView
+    let view = bridge?.uiManager.view(forReactTag: tag) as? RCTScrollView
     rctScrollView = view
   }