Add GeometryActionModifierUI test case

Author: Kyle-Ye

Example/OpenSwiftUIUITests/Layout/Geometry/GeometryActionModifierUITests.swift

@@ -0,0 +1,19 @@
+//
+//  GeometryActionModifierUITests.swift
+//  OpenSwiftUIUITests
+
+import Testing
+@testable import TestingHost
+
+#if os(iOS) || os(visionOS)
+import UIKit
+#elseif os(macOS)
+import AppKit
+#endif
+
+@MainActor
+struct GeometryActionModifierUITests {
+    func example() {
+        openSwiftUIAssertSnapshot(of: GeometryActionModifierExample())
+    }
+}