Refactor DeterministiclinePlot's caseCount -> observationsToPlot filter.

[abrie]

Related issues and PRs

Related to this Fixme, an incremental refactoring of the DeterministicLinePlot component.

(Additional context: #636, #671, #677)

Description

Reduce the code complexity of DeterministicLinePlot.tsx by using computed property names to associate caseCounts with plotted data. This refactoring reduces the number of conditional statements and improves communication of intention.

Impacted Areas in the application

Functionality unchanged, but the code DeterministicLinePlot.tsx is slightly changed.

Testing

No unit tests were added by this change.

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[codecov[bot]]

Codecov Report

Merging #684 into master will increase coverage by 0.08%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #684      +/-   ##
==========================================
+ Coverage   25.63%   25.71%   +0.08%     
==========================================
  Files         128      128              
  Lines        2762     2753       -9     
  Branches      393      388       -5     
==========================================
  Hits          708      708              
+ Misses       2054     2045       -9     

Impacted Files	Coverage Δ
.../components/Main/Results/DeterministicLinePlot.tsx	0.00% <0.00%> (ø)

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