Fix history count failure

[lunny]

Fix an error when get history count

[wxiaoguang]

Thanks. I just realized that using column alias in HAVING is not SQL standard syntax and pgsql doesn't support it. So we need this PR.

[codecov-commenter]

Codecov Report

Merging #17351 (c84e190) into main (83df0ca) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main   #17351      +/-   ##
==========================================
- Coverage   45.27%   45.26%   -0.02%     
==========================================
  Files         788      788              
  Lines       88430    88430              
==========================================
- Hits        40041    40031      -10     
- Misses      41917    41918       +1     
- Partials     6472     6481       +9     

Impacted Files	Coverage Δ
models/issues/content_history.go	69.16% <100.00%> (ø)
modules/notification/mail/mail.go	35.29% <0.00%> (-2.95%)	⬇️
modules/process/manager.go	72.83% <0.00%> (-2.47%)	⬇️
modules/queue/queue_channel.go	95.00% <0.00%> (-1.67%)	⬇️
modules/notification/ui/ui.go	60.86% <0.00%> (-1.45%)	⬇️
models/notification.go	65.28% <0.00%> (-0.88%)	⬇️
models/issue_comment.go	51.31% <0.00%> (-0.59%)	⬇️
services/pull/pull.go	41.78% <0.00%> (-0.41%)	⬇️
routers/api/v1/repo/pull.go	29.35% <0.00%> (+0.51%)	⬆️
modules/queue/workerpool.go	50.38% <0.00%> (+1.14%)	⬆️
... and 1 more

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