resolve type import issue with specific tsconfig settings

[moderateMan]

fix: resolve type import issue with specific tsconfig settings

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• It's the right issue type on the 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)
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• Tests for the changes have been added (for bug fixes/features)
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• It does not introduce a breaking change or has a description of the breaking change

Description

In my project, I encountered an issue where the type files from @toast-ui/react-calendar could not be imported correctly. This was due to the tsconfig settings in my project, specifically using "module": "esnext" and "moduleResolution": "bundler".

To resolve this issue, I updated the package.json of the @toast-ui/react-calendar project to ensure that the type files are correctly resolved and imported.

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