Quality reports cannot be computed when there are images with same filenames and different extensions

[zhiltsov-max]

Actions before raising this issue

• I searched the existing issues and did not find anything similar.
• I read/searched the docs

Steps to Reproduce

1. Create a task with 2 images having same names and different extensions
2. Create a GT job, add annotations, compute quality report
3. The report computation fails with an error about conflicting dataset items

Expected Behavior

Quality report is computed

Possible Solution

The current implementation relies on Datumaro representation for the task. It has the same problem as dataset exports. However, in this case it's possible to map file names for comparison to avoid the problem.

Context

No response

Environment

- Any version of CVAT with quality functionality included