fix: remove settimeout when initialize

[jung-han]

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• It's submitted to right branch according to our branching model
• It's right issue type on title
• When resolving a specific issue, it's referenced in the PR's title (e.g. fix #xxx[,#xxx], where "xxx" is the issue number)
• The commit message follows our guidelines
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• It does not introduce a breaking change or has description for the breaking change

Error Description

const chart = new Chart({ ... });

chart.setData({
  // When calling API immediately after creation
});

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