Forward matrix issue with Pixii+ camera DNG files

Is there an existing issue for this?

• I checked and did not find my issue in the already reported ones

Describe the bug

When importing DNG straight from the Pixii+ camera, Darktable reports forward matrix issues for all DNG files.
Importing the files seem to work fine though.

Camera model: Pixii Camera A2572+
Darktable: 5.0.1 (Fedora 42 RPM from official repo)

Attached is an example DNG file from the camera: https://drive.google.com/file/d/1VRfTZYqRx0hQScM6G7H4kNG2b0ny_b7N/view?usp=sharing

Steps to reproduce

1. Import DNG files from the Pixii+ camera
2. Darktable shows forward matrix error notifications on import

Expected behavior

No response

Logfile | Screenshot | Screencast

No response

Commit

No response

Where did you obtain darktable from?

distro packaging

darktable version

5.0.1

What OS are you using?

Linux

What is the version of your OS?

Fedora 42

Describe your system

No response

Are you using OpenCL GPU in darktable?

Yes

If yes, what is the GPU card and driver?

No response

Please provide additional context if applicable. You can attach files too, but might need to rename to .txt or .zip

No response

Start by reproducing the import with the linked Pixii+ DNG on darktable 5.0.1 and trace where the forward-matrix notification is emitted. Compare the camera metadata with existing DNG handling; done when Pixii+ files import without the notification while normal processing remains intact.