fix(web): forward contentprotectionerror events to React Native layer

[tvanlaerhoven]

Summary

The web THEOplayer SDK fires contentprotectionerror as a separate event from error. WebEventForwarder only listened for 'error', so DRM/content protection errors were silently dropped on web.

On native (Android/iOS), content protection errors already arrive as regular PlayerEventType.ERROR events (with ErrorCode.CONTENT_PROTECTION_ERROR). This fix makes web consistent by forwarding contentprotectionerror as PlayerEventType.ERROR:

// WebEventForwarder.ts — addEventListeners()
  this._player.addEventListener('error', this.onError);
+ this._player.addEventListener('contentprotectionerror', this.onContentProtectionError);

// New handler — maps ContentProtectionErrorEvent → DefaultErrorEvent
+ private readonly onContentProtectionError = (event: NativeContentProtectionErrorEvent) => {
+   this._facade.dispatchEvent(
+     new DefaultErrorEvent({
+       errorCode: event.errorObject.code.toString(),
+       errorMessage: event.errorObject.message,
+     }),
+   );
+ };

Link to Devin session: https://dolby.devinenterprise.com/sessions/4f3f8d74c30b45dfb651a76c65693a83
Requested by: @tvanlaerhoven

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[devin-ai-integration]

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[tvanlaerhoven]

Suggest a CHANGELOG entry that I can simply confirm & commit if OK.

[devin-ai-integration]

Here's a suggested CHANGELOG entry under ## [Unreleased]:

### Fixed

- Fixed an issue on Web where `contentprotectionerror` events from the THEOplayer SDK were not forwarded to the React Native layer, causing DRM-related errors to be silently dropped.

[tvanlaerhoven]

More concise:

- Fixed an issue on Web where `contentprotectionerror` events were not dispatched.

[devin-ai-integration]

Added to CHANGELOG with your wording in f18d962.

[tvanlaerhoven]

contentprotectionerror needs to be forwarded as a separate event