test: Add a test harness for the built card (#2653)

Mounts the card from `dist/` the way Home Assistant does, by URL with a
HACS tag, and asserts the entry stays a facade, that no chunk imports
it, that the browser is served the file unmodified, and that the card
starts up and fetches a language chunk lazily.

Runs in Chromium, Firefox and WebKit, so a change of bundler or minifier
is checked against every engine.

tests/card-controller/issues/issues/initialization.browser.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect, it, vi } from 'vitest';
 
-import { MountedCard } from '../../../browser/mounted-card';
+import { MountedCardFactory, type MountedCard } from '../../../browser/mounted-card';
 import {
   CARD_INITIALIZED_MESSAGE,
   createInitializedAutomation,
@@ -31,7 +31,7 @@ const waitForInitializationFailures = async (card: MountedCard): Promise<void> =
  * is what makes it initializable, which a test does with `setEntityState`.
  */
 const mountBrokenCard = async (): Promise<MountedCard> =>
-  await MountedCard.create(
+  await MountedCardFactory.createFromSource(
     createStillImageCardConfig({
       cameras: [createStillImageCameraConfig(MISSING_CAMERA_ENTITY)],
 

tests/card-controller/issues/issues/media-unavailable.browser.test.ts

@@ -5,7 +5,11 @@ import { MEDIA_LOADING_TIMEOUT_SECONDS } from '../../../../src/card-controller/i
 import { LIVENESS_ENTITY_UNAVAILABLE_GRACE_SECONDS } from '../../../../src/components-lib/live/liveness/detectors/entity-availability';
 import { FRAME_STALL_SECONDS } from '../../../../src/components-lib/media-player/frame-stall-watchdog';
 import type { RawAdvancedCameraCardConfig } from '../../../../src/config/types';
-import { MountedCard, type MountOptions } from '../../../browser/mounted-card';
+import {
+  MountedCardFactory,
+  type MountedCard,
+  type MountOptions,
+} from '../../../browser/mounted-card';
 import { useTestMedia } from '../../../browser/test-media';
 import {
   createFailingMediaURL,
@@ -58,7 +62,7 @@ const mountCard = async (
 ): Promise<MountedCard> => {
   const { cameras, ...mountOptions } = options ?? {};
 
-  return await MountedCard.create(
+  return await MountedCardFactory.createFromSource(
     createStillImageCardConfig({ status_bar: { style: 'outside' }, ...config }),
     createStillCameraHASS({ cameras }),
     mountOptions,