refactor: Migrates legacy Sunburst charts to ECharts and removes legacy code

[michael-s-molina]

SUMMARY

As part of the 4.0 approved initiatives, this PR removes the legacy Sunburst chart by:

• Removing old plugin references throughout the codebase
• Updating unit tests
• Updating E2E tests
• Updating the example dashboards

TESTING INSTRUCTIONS

1 - Make sure all legacy Sunburst charts were converted to Sunburst v2
2 - Make sure legacy Sunburst is not available anymore in the viz picker

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (cf20b34) 69.06% compared to head (9c6ea29) 69.24%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #26350      +/-   ##
==========================================
+ Coverage   69.06%   69.24%   +0.18%     
==========================================
  Files        1930     1924       -6     
  Lines       75275    75030     -245     
  Branches     8429     8427       -2     
==========================================
- Hits        51985    51954      -31     
+ Misses      21143    20929     -214     
  Partials     2147     2147              

Flag	Coverage Δ
hive	53.59% <ø> (+0.02%)	⬆️
javascript	56.78% <ø> (+0.30%)	⬆️
mysql	77.81% <ø> (+0.04%)	⬆️
postgres	77.94% <ø> (+0.04%)	⬆️
presto	53.54% <ø> (+0.02%)	⬆️
python	82.74% <ø> (-0.01%)	⬇️
sqlite	?
unit	56.04% <ø> (+0.02%)	⬆️

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[john-bodley]

@michael-s-molina I was wondering if the title of the PR "refactor: Removes the legacy Sunburst chart" should be updated?

A non-informed reader may recoil thinking that you're simply removing the legacy chart, whereas in actuality you're actually migrating all their legacy charts to the ECharts equivalent and annexing all the legacy code.

[michael-s-molina]

@michael-s-molina I was wondering if the title of the PR "refactor: Removes the legacy Sunburst chart" should be updated?

A non-informed reader may recoil thinking that you're simply removing the legacy chart, whereas in actuality you're actually migrating all their legacy charts to the ECharts equivalent and annexing all the legacy code.

Good callout. I changed the PR title to "refactor: Migrates legacy Sunburst charts to ECharts and removes legacy code"

[yousoph]

Is Sunburst v2 going to be renamed to "Sunburst" in the viz picker since there will be only one?

[michael-s-molina]

Is Sunburst v2 going to be renamed to "Sunburst" in the viz picker since there will be only one?

@yousoph Good call. Renamed.