ai/batch: fix capacity release for payment issues

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What does this pull request do? Explain your changes. (required)

Payment issues were not returning capacity for batch AI jobs

Specific updates (required)

How did you test each of these updates (required)

Does this pull request close any open issues?

Checklist:

• Read the contribution guide
• make runs successfully
• All tests in ./test.sh pass
• README and other documentation updated
• Pending changelog updated

[codecov]

Codecov Report

❌ Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 31.58548%. Comparing base (4044283) to head (e114a25).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
server/ai_http.go	0.00000%	6 Missing ⚠️

Additional details and impacted files

@@                 Coverage Diff                 @@
##              master       #3710         +/-   ##
===================================================
- Coverage   31.59467%   31.58548%   -0.00919%     
===================================================
  Files            157         157                 
  Lines          47527       47544         +17     
===================================================
+ Hits           15016       15017          +1     
- Misses         31617       31633         +16     
  Partials         894         894                 

Files with missing lines	Coverage Δ
server/ai_http.go	9.58084% <0.00000%> (-0.08683%)	⬇️

... and 1 file with indirect coverage changes

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Files with missing lines	Coverage Δ
server/ai_http.go	9.58084% <0.00000%> (-0.08683%)	⬇️

... and 1 file with indirect coverage changes

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[eliteprox]

LGTM

[pschroedl]

👍