fix: go2rtc live provider should work with non-proxied absolute URLs (#2724)

- Closes: #2719

tests/components/live/providers/go2rtc.browser.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect, it } from 'vitest';
+
+import type { VideoRTC } from '../../../../src/components/live/providers/go2rtc/video-rtc';
+import type { RawAdvancedCameraCardConfig } from '../../../../src/config/types';
+import { MountedCardFactory, type MountedCard } from '../../../browser/mounted-card';
+import { CAMERA_ENTITY, createGenericCameraHASS } from '../../../browser/test-utils';
+
+const PLAYER_SELECTOR = 'advanced-camera-card-live-go2rtc-player';
+
+const mount = async (camera: RawAdvancedCameraCardConfig): Promise<MountedCard> =>
+  await MountedCardFactory.createFromSource(
+    {
+      type: 'custom:advanced-camera-card',
+      cameras: [{ camera_entity: CAMERA_ENTITY, live_provider: 'go2rtc', ...camera }],
+      performance: { features: { card_loading_indicator: false } },
+    },
+    createGenericCameraHASS(),
+  );
+
+describe('AdvancedCameraCardGo2RTC', () => {
+  it('should play a go2rtc server that is reached without signing or proxying', async () => {
+    // An absolute URL is not Home Assistant's to sign, and proxying is off, so
+    // the stream URL needs no resolving at all.
+    const card = await mount({
+      go2rtc: { url: 'http://localhost:1984', stream: 'office' },
+      proxy: { live: false },
+    });
+
+    const player = await card.waitForSelector<VideoRTC>(PLAYER_SELECTOR);
+    expect(player.wsURL).toBe('ws://localhost:1984/api/ws?src=office');
+  });
+});