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The response data performance of version 0.21.4 is inconsistent with that of version 0.21.1
version 0.21.4 res.data is JSON, but version 0.21.1 res.data is Object

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Example Code

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service.interceptors.response.use(response => {})

Expected behavior, if applicable

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Environment

• Axios Version [e.g. 0.18.0]: 0.21.4
• Adapter [e.g. XHR/HTTP]: XHR
• Browser [e.g. Chrome, Safari]: Chrome
• Browser Version [e.g. 22]: latest
• Node.js Version [e.g. 13.0.1]: N/A
• OS: [e.g. iOS 12.1.0, OSX 10.13.4]: OSX latest
• Additional Library Versions [e.g. React 16.7, React Native 0.58.0]: ^vue2,6

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