Fix to MS History table reader

[kartographer]

Description

Changes utils.io.ms.read_ms_history to handle when the "APP_PARAMS" and "CLI_COMMAND" are populated in a non-standard way (either unpopulated or populated with an empty array).

Motivation and Context

The original motivation for this was fixing a bug when reading in LOFAR1 files, although I realized that actually the way that we were handling weirdness in the "APP_PARAMS" and "CLI_COMMAND" columns was actually making it so that the history wasn't being round-tripped correctly, so I've modified things to resolve both issues.

Closes #1587

Types of changes

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

Checklist:

• I have read the contribution guide.
• My code follows the code style of this project.

Bug fix checklist:

• My fix includes a new test that breaks as a result of the bug (if possible).
• I have updated the CHANGELOG.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.93%. Comparing base (9bdd3c0) to head (2942834).
⚠️ Report is 112 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1596      +/-   ##
==========================================
- Coverage   99.93%   99.93%   -0.01%     
==========================================
  Files          63       63              
  Lines       22304    22298       -6     
==========================================
- Hits        22289    22283       -6     
  Misses         15       15              

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