Remove "do not enqueue setup experience items >24 hours after enrollment" logic for macOS hosts

[JordanMontgomery]

Related issue: Resolves #40725

Checklist for submitter

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

• Changes file added for user-visible changes in changes/, orbit/changes/ or ee/fleetd-chrome/changes.
  See Changes files for more information.

• Input data is properly validated, SELECT * is avoided, SQL injection is prevented (using placeholders for values in statements)

• If paths of existing endpoints are modified without backwards compatibility, checked the frontend/CLI for any necessary changes

Testing

• Added/updated automated tests

• Where appropriate, automated tests simulate multiple hosts and test for host isolation (updates to one hosts's records do not affect another)

• QA'd all new/changed functionality manually

[codecov]

Codecov Report

❌ Patch coverage is 88.23529% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 66.30%. Comparing base (57c4f8c) to head (1a55057).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
server/datastore/mysql/setup_experience.go	88.23%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #40739   +/-   ##
=======================================
  Coverage   66.30%   66.30%           
=======================================
  Files        2468     2468           
  Lines      197491   197492    +1     
  Branches     8772     8772           
=======================================
+ Hits       130939   130945    +6     
+ Misses      54708    54704    -4     
+ Partials    11844    11843    -1     

Flag	Coverage Δ
backend	68.10% <88.23%> (+<0.01%)	⬆️

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