audio: Update output device name for desktop

Currently, both 3.5mm and USB headphone are named "Wired headphone". For desktop devices, this CL renames 3.5mm headphone as "Headphone" and USB headphone as "USB speaker".

For the device built-in speaker, this CL renames "This phone" to "This computer (internal)".

Change-Id: I6294a9968741b734c49c0511800b3be5bac8f575
Bug: b/355684672, b/357122624
Test: atest PhoneMediaDeviceTest
Flag: com.android.media.flags.enable_audio_input_device_routing_and_volume_control