test: hold the show collection's type, an unknown title's 404 and Brave's fullscreen stand-in

frontend/src/components/PlayerModal.dom.test.tsx

@@ -678,6 +678,12 @@ describe("PlayerModal — the docked bar's fullscreen", () => {
         configurable: true,
         value: () => Promise.resolve(),
       });
+    // Brave's stand-in otherwise: a <video>-only requestFullscreen on HTMLElement.prototype.
+    else
+      Object.defineProperty(HTMLElement.prototype, "requestFullscreen", {
+        configurable: true,
+        value: () => true,
+      });
     vi.spyOn(api, "videoDetail").mockReturnValue(new Promise(() => {}));
     const A = vid("A", 0);
     renderModal(
@@ -688,6 +694,7 @@ describe("PlayerModal — the docked bar's fullscreen", () => {
   };
   afterEach(() => {
     delete (Element.prototype as { requestFullscreen?: unknown }).requestFullscreen;
+    delete (HTMLElement.prototype as { requestFullscreen?: unknown }).requestFullscreen;
   });
 
   it("is offered where the browser can fullscreen an element", () => {

frontend/src/components/PlexPlayer.controls.dom.test.tsx

@@ -912,12 +912,18 @@ describe("the fullscreen button", () => {
     expect(screen.queryByLabelText("plex.player.fullscreen")).not.toBeNull();
   });
 
-  it("is left out where it cannot, whatever fullscreenEnabled claims", async () => {
+  it("is left out where it cannot, whatever Brave's stand-ins claim", async () => {
     withApi(false);
+    // Brave's: a <video>-only requestFullscreen on HTMLElement.prototype, and fullscreenEnabled true.
+    Object.defineProperty(HTMLElement.prototype, "requestFullscreen", {
+      configurable: true,
+      value: () => true,
+    });
     Object.defineProperty(document, "fullscreenEnabled", { configurable: true, value: true });
     mount({ details: { A: item("A") } });
     await playingAt("/media/A", 100);
     expect(screen.queryByLabelText("plex.player.fullscreen")).toBeNull();
     delete (document as { fullscreenEnabled?: unknown }).fullscreenEnabled;
+    delete (HTMLElement.prototype as { requestFullscreen?: unknown }).requestFullscreen;
   });
 });