fix: canvas 新增 onReady 属性

[yesmeck]

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[codecov]

Codecov Report

Merging #1650 (29592ec) into master (90fddc4) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1650   +/-   ##
=======================================
  Coverage   90.81%   90.81%           
=======================================
  Files         380      380           
  Lines        4506     4506           
  Branches      683      683           
=======================================
  Hits         4092     4092           
  Misses        406      406           
  Partials        8        8           

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

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