[video_player] Upgrade video_player to 2.11.1

[gin7773]

Fix #969

Main changes:

• Update video_player to 2.11.1.
• Update video_player_platform_interface to 6.6.0.
• Updates minimum supported SDK version to Flutter 3.38/Dart 3.10.

[gin7773]

#969

[gemini-code-assist]

Code Review

This pull request updates video_player_tizen to version 2.5.10, bumps dependencies for video_player and video_player_platform_interface, and increases the minimum supported SDK versions for Flutter and Dart. It also includes regenerated Pigeon code and updates the implementation to use prefixed imports for the platform interface. Feedback indicates that the Flutter version 3.38.0 is likely a typo as it is currently unreleased, and that the version bump should be minor (2.6.0) rather than patch to comply with Semantic Versioning for SDK constraint changes. Additionally, the environment constraints in the example package require synchronization with the main package.

[JSUYA]

@gin7773
There are new interfaces added in 6.6.0 and 6.5.0 of video_player_platform_interface.
Is it impossible to implement these interfaces in Tizen?

[gin7773]

@gin7773 There are new interfaces added in 6.6.0 and 6.5.0 of video_player_platform_interface. Is it impossible to implement these interfaces in Tizen?

Thanks for the heads-up. Upon closer inspection of the APIs in player.h, here are my findings:

1. setAllowBackgroundPlayback(added in 6.5.0) cannot be implemented as here lacks the necessary APIs.
2. For getAudioTracks(added in 6.6.0), full support is not feasible because the VideoAudioTrack.label cannot be retrieved.
   If we are to include this interface, we will need a workaround for the VideoAudioTrack.label field, for example, by using the uppercase VideoAudioTrack.language as the label value. If this is acceptable, I will submit the code as soon as possible.

[JSUYA]

2. For getAudioTracks(added in 6.6.0), full support is not feasible because the VideoAudioTrack.label cannot be retrieved.
If we are to include this interface, we will need a workaround for the VideoAudioTrack.label field, for example, by using the uppercase VideoAudioTrack.language as the label value. If this is acceptable, I will submit the code as soon as possible.

If a suitable API does not exist, you do not have to implement it.
However, you should add appropriate content to the Limitations section of the README. Please update the README.
https://github.com/flutter-tizen/plugins/tree/master/packages/video_player

[gin7773]

2. For getAudioTracks(added in 6.6.0), full support is not feasible because the VideoAudioTrack.label cannot be retrieved.
   If we are to include this interface, we will need a workaround for the VideoAudioTrack.label field, for example, by using the uppercase VideoAudioTrack.language as the label value. If this is acceptable, I will submit the code as soon as possible.

If a suitable API does not exist, you do not have to implement it. However, you should add appropriate content to the Limitations section of the README. Please update the README. https://github.com/flutter-tizen/plugins/tree/master/packages/video_player

Thanks. I've updated README.md.#978