Rework the presentation of the media browser quick look view to use SwiftUI. (#3619)

* Embed the media preview quick look inside a full screen cover

With a zoom transition on iOS 18.

* Use a the representable coordinator properly.

* Fix a bug with the toolbar appearance.

* Format

* Try prevent the zoom transition being upside down.

* Fix the snapshot test configuration.

ElementX/Sources/Other/SwiftUI/Animation/ZoomTransition.swift

@@ -0,0 +1,30 @@
+//
+// Copyright 2024 New Vector Ltd.
+//
+// SPDX-License-Identifier: AGPL-3.0-only
+// Please see LICENSE in the repository root for full details.
+//
+
+import SwiftUI
+
+extension View {
+    /// A convenience modifier to conditionally apply `.navigationTransition(.zoom(…))` when available.
+    @ViewBuilder
+    func zoomTransition(sourceID: some Hashable, in namespace: Namespace.ID) -> some View {
+        if #available(iOS 18.0, *) {
+            navigationTransition(.zoom(sourceID: sourceID, in: namespace))
+        } else {
+            self
+        }
+    }
+    
+    /// A convenience modifier to conditionally apply `.matchedTransitionSource(…)` when available.
+    @ViewBuilder
+    func zoomTransitionSource(id: some Hashable, in namespace: Namespace.ID) -> some View {
+        if #available(iOS 18.0, *) {
+            matchedTransitionSource(id: id, in: namespace)
+        } else {
+            self
+        }
+    }
+}