fix(html): prevent tsdown from stripping custom element registrations (#703)

packages/html/src/define/video/player.ts

@@ -1,7 +1,8 @@
 import { videoFeatures } from '@videojs/core/dom';
+import { MediaContainerElement } from '../../media/container-element';
 import { createPlayer } from '../../player/create-player';
 import { MediaElement } from '../../ui/media-element';
-import '../media/container';
+import { safeDefine } from '../safe-define';
 
 const { ProviderMixin } = createPlayer({
   features: videoFeatures,
@@ -11,7 +12,9 @@ export class VideoPlayerElement extends ProviderMixin(MediaElement) {
   static readonly tagName = 'video-player';
 }
 
-customElements.define(VideoPlayerElement.tagName, VideoPlayerElement);
+// Provider must be defined before consumer for context handshake during upgrade.
+safeDefine(VideoPlayerElement);
+safeDefine(MediaContainerElement);
 
 declare global {
   interface HTMLElementTagNameMap {