fix: Release audio focus/session on cancel/pause (Android & iOS)

[REU8ER]

Description

This PR fixes an issue where audio from external apps (YouTube Music, Spotify, Apple Music, etc.) would not automatically resume after stopping, canceling, or pausing a recording.

Problem

Android

• Used AUDIOFOCUS_GAIN (permanent focus) instead of AUDIOFOCUS_GAIN_TRANSIENT (temporary focus)
• The cancel() method did not call restoreAudioManagerSettings() to release audio focus
• Result: External apps did not resume playback automatically

iOS

• Audio session was activated on start() but never deactivated on stop(), pause(), or cancel()
• Result: External apps did not resume playback automatically

Solution

Android Changes

1. Changed from AUDIOFOCUS_GAIN to AUDIOFOCUS_GAIN_TRANSIENT in requestAudioFocus()
   • This signals to Android that the audio focus is temporary
   • Other apps will automatically resume when focus is released
2. Added restoreAudioManagerSettings() call in cancel() method
   • Ensures audio focus is properly released on cancel

iOS Changes

1. Added deactivateAudioSession() helper function
2. Call deactivateAudioSession() in stop() and pause() methods of both delegates
   • Properly deactivates the audio session with .notifyOthersOnDeactivation
   • Other apps automatically resume playback

Testing

Tested on:

• Android 12+ (multiple devices)
• iOS 15+ (iPhone)

Steps to reproduce/verify:

1. Start playing music in an external app (YouTube Music, Spotify, etc.)
2. Start recording → music pauses ✅
3. Call stop(), cancel(), or pause() → music resumes automatically ✅

Modified Files

Android

• record_android/android/src/main/kotlin/com/llfbandit/record/record/recorder/AudioRecorder.kt
• record_android/pubspec.yaml (1.4.5 → 1.4.6)
• record_android/CHANGELOG.md

iOS

• record_ios/ios/record_ios/Sources/record_ios/delegate/RecorderFileDelegate.swift
• record_ios/ios/record_ios/Sources/record_ios/delegate/RecorderStreamDelegate.swift
• record_ios/ios/record_ios/Sources/record_ios/extension/RecorderSessionExtension.swift
• record_ios/pubspec.yaml (1.1.5 → 1.1.7)
• record_ios/CHANGELOG.md

Other

• record_platform_interface/pubspec.yaml (1.4.0 → 1.4.1)
• record_macos/pubspec.yaml (1.1.2 → 1.1.3)
• record/pubspec.yaml (dependencies updated)

Breaking Changes

None. This is a bug fix that improves existing behavior without changing the API.

Checklist

• Code follows the project's style guidelines
• Self-review of code completed
• CHANGELOGs updated
• Version numbers updated following semantic versioning
• Tested on Android 12+
• Tested on iOS 15+

References

• Android Audio Focus Documentation
• iOS AVAudioSession Documentation