[video_player] Issue 166411 preferred audio language support for player creation

[Zubii12]

Adds preferredAudioLanguage to platform interface options and forwards it during player creation

Fixes flutter/flutter#166411

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Code Review

This pull request introduces support for configuring a preferred audio language during player creation via VideoPlayerOptions.preferredAudioLanguage across the video_player federated packages. The changes update the platform interface, forward the option during player initialization, and implement native track selection for Android (ExoPlayer) and iOS/macOS (AVFoundation). Unit tests and changelogs are updated accordingly. There are no review comments, so no additional feedback is provided.