Fix alignment track ability to remember the height of the SNPCoverage subtrack on refresh

[cmdcolin]

Currently changing the snpcov subtrack height is not remembered on refresh

This fixes that. There is an old useEffect thing that was hacky that was causing reset to height:45 along with a couple other things

The autorun that propagates state from alignments display model to the SNPCoverage display model is kind of awkward and could be evaluated, but this fixes the particular issue of setting the subtrack height in track state

[codecov]

Codecov Report

Merging #1731 (8040f7f) into master (720894f) will increase coverage by 0.01%.
The diff coverage is 57.14%.

@@            Coverage Diff             @@
##           master    #1731      +/-   ##
==========================================
+ Coverage   58.83%   58.84%   +0.01%     
==========================================
  Files         450      450              
  Lines       20845    20851       +6     
  Branches     4941     4940       -1     
==========================================
+ Hits        12264    12270       +6     
  Misses       8273     8273              
  Partials      308      308              

Impacted Files	Coverage Δ
plugins/alignments/src/CramAdapter/CramAdapter.ts	82.56% <0.00%> (ø)
...AlignmentsDisplay/components/AlignmentsDisplay.tsx	43.75% <ø> (-6.25%)	⬇️
...nments/src/LinearAlignmentsDisplay/models/model.ts	67.60% <60.00%> (+4.11%)	⬆️

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