Sorting of "newspaper issue"-processes in METS-file of year-process

[andre-hohmann]

Describe the bug
If new processes for newspaper-issues are created, the processes are ordered in the METS-file of the year-process according to the Kitodo ID, although this does not always reflect the correct order of the processes.
For example, if processes for older issues are created after the new ones, because they needed to be repaired and could be digitized only after the new ones.
This can be solved be rearranging the order in the metadata editor manually - but this is cumbersome.

To Reproduce
Steps to reproduce the behavior:

1. Create processes of newspaper issues for 1874-07-20, 1874-07-21, 1874-07-22
2. Create processes of newspaper issues for 1874-07-10, 1874-07-11
3. Open the processes of the newspaper year in the metadata editor or check the METS file
4. Check the sorting of the issues processes

Expected behavior
The processes of the issues should be ordered by the values in the METS-attribute ORDERLABEL.

Screenshots

Release
3.6.0-SNAPSHOT from 03/01/2023

Desktop (please complete the following information):

• OS: Windows
• Browser: Chrome

Additional context
This issue is related to:

• Sorting of "newspaper year"-processes in METS-file of newspaper-process #5821