Fix multi-package host software details

[cdcme]

Related issue: Resolves #49208

Host software details now show the status and install details for the installer scoped to the host, for titles with multiple packages.

No changes/ file: this is an unreleased bug fix, and the multiple-packages feature PR carries the changes entry.

Checklist for submitter

• Input data is properly validated, SELECT * is avoided, SQL injection is prevented (using placeholders for values in statements), JS inline code is prevented especially for url redirects, and untrusted data interpolated into shell scripts/commands is validated against shell metacharacters.

Testing

• Added/updated automated tests
• QA'd all new/changed functionality manually

[codecov]

Codecov Report

❌ Patch coverage is 93.10345% with 6 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (feat/28108-multiple-custom-packages@f29ecfa). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
server/datastore/mysql/software.go	93.10%	3 Missing and 3 partials ⚠️

Additional details and impacted files

@@                          Coverage Diff                           @@
##             feat/28108-multiple-custom-packages   #49335   +/-   ##
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  Coverage                                       ?   68.11%           
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  Files                                          ?     3768           
  Lines                                          ?   239475           
  Branches                                       ?    12552           
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  Hits                                           ?   163110           
  Misses                                         ?    61668           
  Partials                                       ?    14697           

Flag	Coverage Δ
backend	69.61% <93.10%> (?)

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[jkatz01]

Could this test maybe use InsertSoftwareInstallRequest() / InsertSoftwareUninstallRequest() to be a bit more realistic?

[cdcme]

We could, but since this test targets the read path (not the write path, already covered by testSetHostSoftwareInstallResult), the raw rows are the minimal fixture and stay consistent with the neighboring multi-package tests.