Breakpoint split view SVG export

[cmdcolin]

Fixes #2269

This rounds out the SVG exporting of all our normal view types, except the tabular view, not sure that is a good candidate anyhow though

[cmdcolin]

whitespace-ignored diff is a bit easier to read https://github.com/GMOD/jbrowse-components/compare/svg_breakpoint_split_view?expand=1&w=1

[codecov]

Codecov Report

Merging #3527 (6e5947a) into main (363f1ce) will increase coverage by 0.06%.
The diff coverage is 83.33%.

@@            Coverage Diff             @@
##             main    #3527      +/-   ##
==========================================
+ Coverage   62.58%   62.64%   +0.06%     
==========================================
  Files         862      865       +3     
  Lines       30164    30258      +94     
  Branches     7234     7261      +27     
==========================================
+ Hits        18878    18956      +78     
- Misses      11098    11111      +13     
- Partials      188      191       +3     

Impacted Files	Coverage Δ
.../BreakpointSplitView/components/Translocations.tsx	3.50% <0.00%> (ø)
...s/linear-genome-view/src/LinearGenomeView/model.ts	84.71% <ø> (ø)
...BreakpointSplitView/components/ExportSvgDialog.tsx	66.66% <66.66%> (ø)
...pointSplitView/components/AlignmentConnections.tsx	80.28% <72.72%> (+1.11%)	⬆️
...iew/src/BreakpointSplitView/components/Overlay.tsx	80.00% <80.00%> (ø)
...aseLinearDisplay/models/BaseLinearDisplayModel.tsx	86.89% <80.00%> (ø)
...SplitView/svgcomponents/SVGBreakpointSplitView.tsx	93.33% <93.33%> (ø)
...w/src/BreakpointSplitView/components/Breakends.tsx	84.74% <100.00%> (ø)
...kpointSplitView/components/BreakpointSplitView.tsx	100.00% <100.00%> (+7.14%)	⬆️
...kpoint-split-view/src/BreakpointSplitView/model.ts	77.89% <100.00%> (+1.75%)	⬆️
... and 5 more

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[cmdcolin]

note that this requires the blocks to be rendered before exporting svg, so it uses an arbitrary timeout in the test to achieve this. other svg exports properly queue up tasks and don't need this, and additional work on this branch could fix that, but it would require a somewhat larger refactor