[cherry-pick] fix: improve the performance of list artifacts

[chlins]

1. Change the query for listing tasks of scan which can use the db index.
2. Add the gin index for task.extra_attrs.report_uuids

Fixes: #18013

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Fixes #(issue)

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[codecov]

Codecov Report

Merging #18632 (3cb433f) into release-2.7.0 (a051373) will decrease coverage by 0.01%.
The diff coverage is 68.96%.

@@                Coverage Diff                @@
##           release-2.7.0   #18632      +/-   ##
=================================================
- Coverage          66.44%   66.43%   -0.01%     
=================================================
  Files               1012     1012              
  Lines             108614   108633      +19     
  Branches            2677     2677              
=================================================
+ Hits               72164    72167       +3     
- Misses             32487    32501      +14     
- Partials            3963     3965       +2     

Flag	Coverage Δ
unittests	66.43% <68.96%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/pkg/task/dao/task.go	64.21% <60.00%> (-0.34%)	⬇️
src/pkg/task/task.go	63.19% <75.00%> (+0.93%)	⬆️
src/controller/scan/base_controller.go	60.17% <100.00%> (-0.40%)	⬇️

... and 6 files with indirect coverage changes

[wy65701436]

LGTM