Use more defaults in rollup plugins

[garrettjstevens]

This removes some customization from the rollup plugins in the plugin-development-tools package. The customizations were originally brought in from the TSDX template we used to create the rolllup config. In my testing in Apollo, the defaults actually end up having more consistent and reliable behavior than these customizations.

[codecov]

Codecov Report

Merging #3165 (6009969) into main (4b422e7) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #3165      +/-   ##
==========================================
- Coverage   59.48%   59.46%   -0.03%     
==========================================
  Files         667      667              
  Lines       28606    28606              
  Branches     6923     6923              
==========================================
- Hits        17017    17010       -7     
- Misses      11268    11275       +7     
  Partials      321      321              

Impacted Files	Coverage Δ
...svg/src/SvgFeatureRenderer/components/Segments.tsx	85.71% <0.00%> (-7.15%)	⬇️
...src/SvgFeatureRenderer/components/FeatureLabel.tsx	80.55% <0.00%> (-5.56%)	⬇️
...gins/svg/src/SvgFeatureRenderer/components/util.ts	91.83% <0.00%> (-4.09%)	⬇️
...FeatureRenderer/components/ProcessedTranscript.tsx	87.32% <0.00%> (-1.41%)	⬇️
packages/core/util/layouts/GranularRectLayout.ts	86.86% <0.00%> (-0.43%)	⬇️
products/jbrowse-web/src/util.ts	48.33% <0.00%> (ø)

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[cmdcolin]

sounds good to me!