fix(pulseaudio): use device names as id

[roderickvd]

New output:

Supported hosts:
  [PulseAudio, Alsa]
Available hosts:
  [PulseAudio, Alsa]
PulseAudio
  Default Input Device:
    Some("pulseaudio:alsa_input.usb-SunplusIT_Inc_PC_Camera_JV0-02.analog-stereo")
  Default Output Device:
    Some("pulseaudio:alsa_output.usb-Schiit_Audio_Yggdrasil__384_1-00.analog-stereo")
  Devices: 
  1. pulseaudio:alsa_output.usb-C-Media_Electronics_Inc._USB_Audio_Device-00.analog-stereo (Audio Adapter (Unitek Y-247A) Analog Stereo)
  ...

Old output:

Supported hosts:
  [PulseAudio, Alsa]
Available hosts:
  [PulseAudio, Alsa]
PulseAudio
  Default Input Device:
    Some("pulseaudio:63")
  Default Output Device:
    Some("pulseaudio:62")
  Devices: 
  1. pulseaudio:61 (alsa_output.usb-C-Media_Electronics_Inc._USB_Audio_Device-00.analog-stereo)
  ...

Fixes #1227

[Copilot]

Pull request overview

This PR updates the PulseAudio backend to produce stable, meaningful DeviceIds by using the PulseAudio sink/source names rather than their transient numeric indexes, addressing unstable IDs (notably for Bluetooth devices) reported in #1227.

Changes:

• Change PulseAudio DeviceTrait::id() to use info.name (e.g. alsa_output.*, bluez_output.*) instead of info.index.
• Update Device equality and hashing to be based on info.name rather than info.index.
• Adjust DeviceTrait::description() to prefer the human-friendly PulseAudio description as the display name.

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[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 1 comment.

[DanielHabenicht]

Works!