[BUG] ASUS UX8406CA Arrow Lake ACE3: Headset Mic (ALC294) missing capture pipeline in generic topologies

[cceelen]

• Hardware: ASUS Zenbook Duo (2025) UX8406CA, Intel Arrow Lake-H (ACE3).
• Codec: Realtek ALC294 (SSID 1043:1c43).

Physical jack detection works (Pin 0x19 sense flips to 0x80000000), but no Analog Capture PCM is exposed by the SOF driver.

A topology update or quirk to enable the analog capture path for this SSID.
With topology intel/sof-ipc4-tplg/sof-hda-generic-2ch.tplg
https://alsa-project.org/db/?f=7a2a6a227b0f02e375ea666de19de60de4aa931d

Attempted Fixes: Forcing sof-hda-generic-ace3-2ch.tplg and 4ch.tplg. The 4-channel version results in ASoC error -22 (no matching blob for 4ch DMIC), and the 2-channel version lacks the Headset Mic widget entirely.
With topology intel/sof-ipc4-tplg/sof-hda-generic-ace3-2ch.tplg
https://alsa-project.org/db/?f=9608a0555ca6a1db6276d8d9e69d6924d405e475

I'm at a loss here on how to fix this. Is this an ALSA issue or a topology problem?