Revert "Fix back gesture after modal popup appearance (#2004)" (#2037)

Revert due to
https://youtrack.jetbrains.com/issue/CMP-8019/iOS-Back-handler.-Doesnt-work-in-landscape-mode

## Release Notes
N/A

Author: ASalavei

Diff for: compose/ui/ui/src/uikitMain/kotlin/androidx/compose/ui/backhandler/UIKitBackGestureDispatcher.kt

@@ -41,6 +41,7 @@ import platform.UIKit.UIRectEdgeLeft
 import platform.UIKit.UIRectEdgeRight
 import platform.UIKit.UIScreenEdgePanGestureRecognizer
 import platform.UIKit.UIView
+import platform.UIKit.UIWindow
 import platform.darwin.NSObject
 
 private const val BACK_GESTURE_SCREEN_SIZE = 0.3
@@ -90,10 +91,17 @@ internal class UIKitBackGestureDispatcher(
             leftEdgePanGestureRecognizer.state in activeGestureStates ||
                 rightEdgePanGestureRecognizer.state in activeGestureStates
 
-    fun attachToView(view: UIView?) {
+    fun onDidMoveToWindow(window: UIWindow?, composeRootView: UIView) {
         if (enableBackGesture) {
-            removeGestureListeners()
-            if (view != null) {
+            if (window == null) {
+                removeGestureListeners()
+            } else {
+                var view: UIView = composeRootView
+                while (view.superview != window) {
+                    view = requireNotNull(view.superview) {
+                        "Window is not null, but superview is null for ${view.debugDescription}"
+                    }
+                }
                 addGestureListeners(view)
             }
         }

Diff for: compose/ui/ui/src/uikitMain/kotlin/androidx/compose/ui/scene/ComposeHostingViewController.uikit.kt

@@ -206,9 +206,7 @@ internal class ComposeHostingViewController(
     }
 
     private fun onDidMoveToWindow(window: UIWindow?) {
-        if (mediator != null) {
-            backGestureDispatcher.attachToView(window)
-        }
+        backGestureDispatcher.onDidMoveToWindow(window, rootView)
         val windowContainer = window ?: return
 
         updateInterfaceOrientationState()
@@ -274,8 +272,6 @@ internal class ComposeHostingViewController(
     override fun viewControllerDidEnterWindowHierarchy() {
         super.viewControllerDidEnterWindowHierarchy()
 
-        backGestureDispatcher.attachToView(view.window)
-
         val metalView = MetalView(
             retrieveInteropTransaction = {
                 mediator?.retrieveInteropTransaction() ?: object : UIKitInteropTransaction {
@@ -326,8 +322,6 @@ internal class ComposeHostingViewController(
     override fun viewControllerDidLeaveWindowHierarchy() {
         super.viewControllerDidLeaveWindowHierarchy()
 
-        backGestureDispatcher.attachToView(null)
-
         // Store the current state in the next SaveableStateRegistry instance. It is used to
         // provide the saved state to the next compose scene when the view controller re-enters
         // the window hierarchy.

Diff for: compose/ui/ui/src/uikitMain/kotlin/androidx/compose/ui/scene/UIKitComposeSceneLayer.uikit.kt

@@ -45,6 +45,7 @@ import androidx.compose.ui.window.MetalView
 import kotlin.coroutines.CoroutineContext
 import kotlinx.cinterop.CValue
 import platform.CoreGraphics.CGPoint
+import platform.UIKit.UIWindow
 
 internal class UIKitComposeSceneLayer(
     private val onClosed: (UIKitComposeSceneLayer) -> Unit,
@@ -71,6 +72,7 @@ internal class UIKitComposeSceneLayer(
         }
 
     val view = UIKitComposeSceneLayerView(
+        ::onDidMoveToWindow,
         ::isInsideInteractionBounds,
         isInterceptingOutsideEvents = { focusable }
     )
@@ -81,9 +83,7 @@ internal class UIKitComposeSceneLayer(
         enableBackGesture = enableBackGesture,
         density = view.density,
         getTopLeftOffsetInWindow = { boundsInWindow.topLeft }
-    ).also {
-        it.attachToView(view)
-    }
+    )
 
     private val mediator = ComposeSceneMediator(
         parentView = view,
@@ -136,6 +136,10 @@ internal class UIKitComposeSceneLayer(
 
     private val scrimPaint = Paint()
 
+    private fun onDidMoveToWindow(window: UIWindow?) {
+        backGestureDispatcher.onDidMoveToWindow(window, view)
+    }
+
     fun render(canvas: Canvas, nanoTime: Long) {
         if (scrimColor != null) {
             val rect = metalView.bounds.asDpRect().toRect(density)
@@ -161,7 +165,6 @@ internal class UIKitComposeSceneLayer(
         view.removeFromSuperview()
         view.dispose()
         interopContainerView.removeFromSuperview()
-        backGestureDispatcher.attachToView(null)
     }
 
     @Composable

Diff for: compose/ui/ui/src/uikitMain/kotlin/androidx/compose/ui/scene/UIKitComposeSceneLayerView.kt

@@ -27,6 +27,7 @@ import platform.UIKit.UIEvent
 import platform.UIKit.UIEventTypeTouches
 import platform.UIKit.UITouch
 import platform.UIKit.UIView
+import platform.UIKit.UIWindow
 
 /**
  * A backing ComposeSceneLayer view for each Compose scene layer. Its task is to
@@ -38,6 +39,7 @@ import platform.UIKit.UIView
  * events that start outside the bounds of the layer content or should let them pass through.
  */
 internal class UIKitComposeSceneLayerView(
+    private var onDidMoveToWindow: (UIWindow?) -> Unit,
     private var isInsideInteractionBounds: (point: CValue<CGPoint>) -> Boolean,
     private var isInterceptingOutsideEvents: () -> Boolean
 ): UIView(frame = CGRectZero.readValue()) {
@@ -119,10 +121,16 @@ internal class UIKitComposeSceneLayerView(
     }
 
     fun dispose() {
+        onDidMoveToWindow = {}
         isInsideInteractionBounds = { false }
         isInterceptingOutsideEvents = { false }
         onOutsidePointerEvent = {}
     }
+
+    override fun didMoveToWindow() {
+        super.didMoveToWindow()
+        onDidMoveToWindow(window)
+    }
 }
 
 /**