Fix opening link in new tab by default in feature details

[cmdcolin]

Fixes #3063 #3063

The useEffect didn't work as expected, so this PR changes the code to run it in the renderer routine to get expected behavior

[codecov]

Codecov Report

Merging #3064 (9eb71bb) into main (912fdb8) will decrease coverage by 0.00%.
The diff coverage is 66.66%.

❗ Current head 9eb71bb differs from pull request most recent head 48d3447. Consider uploading reports for the commit 48d3447 to get more accurate results

@@            Coverage Diff             @@
##             main    #3064      +/-   ##
==========================================
- Coverage   61.51%   61.51%   -0.01%     
==========================================
  Files         591      591              
  Lines       26980    26979       -1     
  Branches     6527     6527              
==========================================
- Hits        16598    16597       -1     
  Misses      10085    10085              
  Partials      297      297              

Impacted Files	Coverage Δ
packages/core/ui/SanitizedHTML.tsx	85.71% <66.66%> (-0.96%)	⬇️
products/jbrowse-web/src/util.ts	27.27% <0.00%> (ø)

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