fix: fix auto-applied license flow

[iloveagent57]

Fix the activateOrAutoApplySubscriptionLicense() function so that it doesn't early-return when there is no subscription license present (which is actually the expected case during the auto-apply flow), but does early return if there is no current subscription plan associated with the present customer agreement record.
ENT-9221

Local success (after fixing devstack CSRF_TRUSTED_ORIGINS in license-manager):
https://github.com/user-attachments/assets/5b4885b8-6ccf-4d4e-9aac-59df077d0df9

For all changes

• Ensure adequate tests are in place (or reviewed existing tests cover changes)
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Only if submitting a visual change

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.79%. Comparing base (72c17d9) to head (d5fe284).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1119      +/-   ##
==========================================
+ Coverage   86.59%   86.79%   +0.20%     
==========================================
  Files         380      380              
  Lines        7916     7916              
  Branches     1937     1905      -32     
==========================================
+ Hits         6855     6871      +16     
+ Misses       1009      995      -14     
+ Partials       52       50       -2     

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