fix: styled-jsx unique "key" prop

[jnoodle]

Checklist

• [x] Fix linting errors
• [x] Tests have been added / updated (or snapshots)

Change information

[codecov[bot]]

Codecov Report

Merging #118 into dev will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##               dev      #118   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          199       199           
  Lines         2831      2831           
  Branches       754       727   -27     
=========================================
  Hits          2831      2831           

Impacted Files	Coverage Δ
components/date-picker/style.tsx	100.00% <100.00%> (ø)

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[ConfluxBot]

:tada: This PR is included in version 2.0.0-alpha.8 :tada:

The release is available on:

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

Your semantic-release bot :package::rocket:

[ConfluxBot]

:tada: This PR is included in version 2.0.0 :tada:

The release is available on:

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

Your semantic-release bot :package::rocket: