Fixes 5399 - voice memo recording does not use microphone from connected headphones

[Anghostdy]

First time contributor checklist

• [x] I have read the README and CONTRIBUTING documents
• [x] I have signed the Contributor Licence Agreement

Contributor checklist

• [x] My commits are rebased on the latest main branch

• [x] My commits are in nice logical chunks

• [x] My contribution is fully baked and is ready to be merged as is

• [x] I have tested my contribution on these devices:

  • iPhone 14 Pro, iOS 17.1.1

• ---

Description

My PR fixes the following reported, confirmed, bug by me: https://github.com/signalapp/Signal-iOS/issues/5399

Issue

• If you record a voice memo and use (in my case) airpods, the microphone of the device (iPhone) is used instead of the airpods microphone. This does not happen with voice calls.

Solution

• add allowBluetooth to the AudioSession
• I've also added allowBluetoothA2DP, similar like in the "CallAudioService".

I've tested the implementation by building the app via xcode on my iPhone 14 pro. Before, i could reproduce the issue, after adding allowBluetooth and sending another voice memo, it did work like expected.

Note

It is my first time contributing. Please let me know if any changes are required.

[harry-signal]

Thanks for the fix! I've merged it in and you'll see the commit in the next public release! (Which will be slightly delayed due to the thanksgiving holiday)