refactor: Removes the CSS files from the Rose plugin

[michael-s-molina]

SUMMARY

This PR removes the CSS files from the Rose plugin using Emotion. It also adjusts the styles to match theme configuration and existing components.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

Check that the plugin is very similar to the previous version. We may have color, font, and opacity differences due to theme adjustments.

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

Merging #19473 (802b212) into master (85e330e) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

❗ Current head 802b212 differs from pull request most recent head 9577f79. Consider uploading reports for the commit 9577f79 to get more accurate results

@@            Coverage Diff             @@
##           master   #19473      +/-   ##
==========================================
- Coverage   66.56%   66.56%   -0.01%     
==========================================
  Files        1676     1677       +1     
  Lines       64106    64112       +6     
  Branches     6519     6519              
==========================================
  Hits        42673    42673              
- Misses      19742    19748       +6     
  Partials     1691     1691              

Flag	Coverage Δ
javascript	51.22% <0.00%> (-0.01%)	⬇️

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Impacted Files	Coverage Δ
...plugins/legacy-plugin-chart-rose/src/ReactRose.jsx	0.00% <0.00%> (ø)
...ntend/plugins/legacy-plugin-chart-rose/src/Rose.js	0.00% <0.00%> (ø)

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[github-actions]

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