[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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[codecov]

Codecov Report

Merging #18639 (b925c55) into release-2.8.0 (a1e8914) will decrease coverage by 0.02%.
The diff coverage is 68.96%.

@@                Coverage Diff                @@
##           release-2.8.0   #18639      +/-   ##
=================================================
- Coverage          67.36%   67.35%   -0.02%     
=================================================
  Files                984      984              
  Lines             106987   107006      +19     
  Branches            2670     2670              
=================================================
+ Hits               72074    72076       +2     
- Misses             31033    31047      +14     
- Partials            3880     3883       +3     

Flag	Coverage Δ
unittests	67.35% <68.96%> (-0.02%)	⬇️

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	62.42% <75.00%> (+0.98%)	⬆️
src/controller/scan/base_controller.go	60.07% <100.00%> (-0.40%)	⬇️

... and 7 files with indirect coverage changes

[wy65701436]

lgtm