fix(theme): revert default palette change

[zxc0328]

👀 PR includes

恢复测试用的数值。

[github-actions]

🎊 PR Preview has been successfully built and deployed to https://s2-preview-pr-863.surge.sh

[github-actions]

Size Change: +3 B (0%)

Total Size: 185 kB

Filename	Size	Change
./packages/s2-core/dist/index.min.js	113 kB	+3 B (0%)

ℹ️ View Unchanged

Filename	Size
./packages/s2-core/dist/style.min.css	356 B
./packages/s2-react/dist/index.min.js	68.5 kB
./packages/s2-react/dist/style.min.css	3.1 kB

_{compressed-size-action}

[codecov]

Codecov Report

Merging #863 (2515246) into master (63d1fcb) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #863   +/-   ##
=======================================
  Coverage   71.43%   71.43%           
=======================================
  Files         168      168           
  Lines       11756    11756           
  Branches     2748     2748           
=======================================
  Hits         8398     8398           
  Misses       2207     2207           
  Partials     1151     1151           

Impacted Files	Coverage Δ
packages/s2-core/src/theme/palette/default.ts	100.00% <ø> (ø)

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[github-actions]

🎉 This PR is included in version @antv/s2-v1.2.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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