fix issues with ddm CLI

[roperzh]

for #17404. I couldn't find tests for this portion of the code, so full tests for this section will need to be added during freeze.

Checklist for submitter

If some of the following don't apply, delete the relevant line.

• Input data is properly validated, SELECT * is avoided, SQL injection is prevented (using placeholders for values in statements)
• Added/updated tests
• Manual QA for all new/changed functionality

[codecov]

Codecov Report

Attention: Patch coverage is 70.27027% with 11 lines in your changes are missing coverage. Please review.

❗ No coverage uploaded for pull request base (feat-macos-ddm@577d5c2). Click here to learn what that means.

Files	Patch %	Lines
server/datastore/mysql/apple_mdm.go	67.64%	8 Missing and 3 partials ⚠️

Additional details and impacted files

@@                Coverage Diff                @@
##             feat-macos-ddm   #17826   +/-   ##
=================================================
  Coverage                  ?   65.85%           
=================================================
  Files                     ?     1194           
  Lines                     ?   109057           
  Branches                  ?     2574           
=================================================
  Hits                      ?    71820           
  Misses                    ?    31815           
  Partials                  ?     5422           

Flag	Coverage Δ
backend	66.87% <70.27%> (?)

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[gillespi314]

Nice!