Add rotate screen support for UIHostingView (#410)

Author: Kyle-Ye

Sources/OpenSwiftUI/Integration/Hosting/UIKit/View/UIHostingView.swift

@@ -236,7 +236,7 @@ open class _UIHostingView<Content>: UIView, XcodeViewDebugDataProvider where Con
             }
             let oldValue = super.frame
             super.frame = newValue
-            frameDidChange(oldValue: oldValue)
+            base.frameDidChange(oldValue: oldValue)
         }
     }
 
@@ -250,7 +250,7 @@ open class _UIHostingView<Content>: UIView, XcodeViewDebugDataProvider where Con
             }
             let oldValue = super.bounds
             super.bounds = newValue
-            frameDidChange(oldValue: oldValue)
+            base.frameDidChange(oldValue: oldValue)
         }
     }
 
@@ -439,10 +439,6 @@ extension _UIHostingView {
     func didChangeColorScheme(from oldColorScheme: ColorScheme?) {
         // TODO
     }
-    
-    private func frameDidChange(oldValue: CGRect) {
-        // TODO
-    }
 
     package var isInSizeTransition: Bool {
         _base.isInSizeTransition

Sources/OpenSwiftUI/Integration/Hosting/UIKit/View/UIHostingViewBase.swift

@@ -460,7 +460,12 @@ package class UIHostingViewBase {
     // MARK: - UIView related
 
     package func frameDidChange(oldValue: CGRect) {
-        _openSwiftUIUnimplementedWarning()
+        guard let uiView, let host, uiView.bounds.size != .zero else {
+            return
+        }
+        var props: ViewRendererHostProperties = [.size, .containerSize]
+        props.insert(.safeArea)
+        host.invalidateProperties(props, mayDeferUpdate: false)
     }
 
     package func _geometryChanged(_: UnsafeRawPointer, forAncestor: UIView?) {