[JUNGFRAU][CORRECT] Fix/store roi only if defined

Description

A bug was introduced here https://git.xfel.eu/detectors/pycalibration/-/merge_requests/762/diffs that lead to creating CONTROL and INSTRUMENT sections for ROI even if none was defined.

How Has This Been Tested?

Relevant Documents (optional)

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

Reviewers

@kluyvert

assigned to @ahmedk

added 1 commit

• cb46bba3 - remove unrelated changes

Compare with previous version

changed title from Fix/store roi only if defined to [JUNGFRAU][CORRECT] Fix/store roi only if defined

LGTM

Thank you @kluyvert

merged

mentioned in commit ee7bddf8