Sort most dangerous vulnerabilities by score and severity level

[stonezdj]

Check it is referred by a scan_report
Add index to report_vulnerability_record to improve performance
Fixes #19014 #19028

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Comprehensive Summary of your change

Issue being fixed

Fixes #(issue)

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[codecov]

Codecov Report

Merging #19103 (dede4ba) into main (c62ec7d) will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main   #19103      +/-   ##
==========================================
+ Coverage   67.39%   67.42%   +0.02%     
==========================================
  Files         992      992              
  Lines      108768   108768              
  Branches     2751     2751              
==========================================
+ Hits        73308    73334      +26     
+ Misses      31525    31496      -29     
- Partials     3935     3938       +3     

Flag	Coverage Δ
unittests	67.42% <ø> (+0.02%)	⬆️

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Files Changed	Coverage Δ
src/pkg/securityhub/dao/security.go	59.60% <ø> (ø)

... and 7 files with indirect coverage changes

[wy65701436]

lgtm

[chlins]

lgtm