fix: getDuration() for iOS

[mavzerbay]

Description

Android setSourceUrl working fine, but for iOS its return 0 or null every time. When I examined your codes, I saw a condition made for android and I wrote a condition for iOS. It may not be a very successful fix, but it solved my job a lot.

Checklist

• [x] The title of my PR starts with a Conventional Commit prefix (fix:, feat:, refactor:, docs:, chore:, test:, ci: etc).
• [ ] I have read the Contributor Guide and followed the process outlined for submitting PRs.
• [ ] I have updated/added tests for ALL new/updated/fixed functionality.
• [ ] I have updated/added relevant documentation and added dartdoc comments with ///, where necessary.
• [ ] I have updated/added relevant examples in example.

Breaking Change

• [ ] Yes, this is a breaking change.
• [x] No, this is not a breaking change.

Related Issues

https://github.com/bluefireteam/audioplayers/issues/1578

[Gustl22]

Hey there sorry for letting you wait so long. Thank you for contributing! The issue you mentioned to fix was meant for Android with OPUS codec. This fix is for iOS. Can you first give us a reproducible example of what you try to fix? It seems that this change just downloads every iOS source and handles it as device file, which is not how every source should be handled.

[github-actions[bot]]

This issue was closed by the changes-requested bot due to inactivity.