Wrong sink option when executing audio/playback_headphones

[PeiYao Chang]

[Summary]
The Sink will be changed during audio/playback_headphones testing

[Steps to reproduce]
1. Connect monitor via DP cable
2. Boot into OS
3. Run "checkbox-cli run com.canonical.certification::audio/playback_headphones"
4. Follow the steps to plug a headset and choose headphone on popup dialog
5. Check the Sink in Settings -> Sound, it should turn to the "Headphones - Build in-Audio" from "Speakers - Build in-Audio"
6. Press Enter to perform case
7. The Sink becomes "HDMI/Displayport-HDA NVDIA" and no sound from headset (issue happened)

[Expected result]
Sink should keep as "Headphones - Build in-Audio" and can hear sound from headset

[Actual result]
Sink is changed to "HDMI/Displayport-HDA NVDIA" during testing and back automatically.
See comment 2 (Video record)

[Failure rate]
Always

[Additional Info]
SKU ：KRPL-CFF-EVT-C1 (Desktop)
BIOS Version : 0.4.18
Image/Manifest : CFF X19
CPU : Raptor Lake 8+16 65W LGA ES2
GPU : T400 dGFx

[Pierre Equoy (pieq)]

For the devices that exhibit the problem, could you run the following and attach the resulting log (pactl_list.log) to this issue?

pactl list > pactl_list.log

[Vanessa Lin (wakuwaku-va)]

This issue can duplicate on CID 202210-30780(A4500)

kernel version:5.15.0-46-generic
manifest version:pc-stella-cmit-focal-amd64-X00-20220907-91.iso
CID:202210-30780(A4500)
Graphic:515.65.1
BIOS: U61 Ver. 00.000.89

[Maksim Beliaev (beliaev-maksim)]

Bug was migrated to GitHub: https://github.com/canonical/checkbox/issues/72.
Bug is no more monitored here.