fix(wechat): 修复 Map 组件 polygons 属性不生效的问题

[Darmody]

fix #1035

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[codecov]

Codecov Report

Merging #1038 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1038   +/-   ##
=======================================
  Coverage   95.71%   95.71%           
=======================================
  Files         330      330           
  Lines        3593     3593           
  Branches      532      532           
=======================================
  Hits         3439     3439           
  Misses        153      153           
  Partials        1        1           

Impacted Files	Coverage Δ
...kages/remax-wechat/src/hostComponents/Map/index.ts	100.00% <ø> (ø)
...ckages/remax-wechat/src/hostComponents/Map/node.ts	100.00% <ø> (ø)

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