[Bug] Cannot load images in TMTV mode with local datasource

[sen-trenser]

Describe the Bug

Loading TMTV mode with local folder as datasource is not working in demo sites.

An exception is thrown from extensions/default/src/getPTImageIdInstanceMetadata.ts as it cannot provide metadata for local datasource image ID.

  if (!dicomMetaData) {
    throw new Error('dicom metadata are required');
  }

This seems to be broken from 3.9.1 tag and also exists in the nightly build demo viewer.

Steps to Reproduce

Go to https://viewer.ohif.org/local and load a folder with PET and CT images
Open the study in TMTV mode from the study list page.

The current behavior

TMTV mode shows the below error and all vewports are blank.

The expected behavior

TMTV mode should open the study and display images

OS

Ubuntu 24.04

Node version

18.19.0

Browser

Chrome 131.0.6778.108

[sedghi]

Does the same data work in regular mode?

[sen-trenser]

@sedghi We checked the same data in 3.8 and it loads in TMTV mode.
None of the CT-PT data we have is loading in TMTV mode with OHIF local datasource.

Here is an example data from TCIA manifest file: manifest-1733899117169.zip