allow iframes in feed entries (#1688)

commafeed-client/src/setupTests.ts

@@ -0,0 +1,16 @@
+import "@testing-library/jest-dom"
+import { vi } from "vitest"
+
+Object.defineProperty(window, "matchMedia", {
+    writable: true,
+    value: vi.fn().mockImplementation(query => ({
+        matches: false,
+        media: query,
+        onchange: null,
+        addListener: vi.fn(), // deprecated
+        removeListener: vi.fn(), // deprecated
+        addEventListener: vi.fn(),
+        removeEventListener: vi.fn(),
+        dispatchEvent: vi.fn(),
+    })),
+})