useMagicKeys() in VueUse v8.9.0 will cause the console to report a warning

[lainbo]

Describe the bug

I use useMagicKeys() and every time the page loses focus and gains focus, the console gives me a warning "Write operation failed: computed value is readonly".

Reproduction

https://codesandbox.io/s/bold-hill-fulen4?file=/src/App.vue

System Info

System:
    OS: Windows 10 10.0.22000
    CPU: (12) x64 12th Gen Intel(R) Core(TM) i5-12400
    Memory: 7.43 GB / 15.75 GB
  Binaries:
    Node: 16.15.1 - D:\Softwares\nodejs\node.EXE
    Yarn: 1.22.19 - D:\Softwares\nodejs\yarn.CMD
    npm: 8.11.0 - D:\Softwares\nodejs\npm.CMD
  Browsers:
    Edge: Spartan (44.22000.120.0), Chromium (103.0.1264.49)
    Internet Explorer: 11.0.22000.120

Used Package Manager

yarn

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Make sure this is a VueUse issue and not a framework-specific issue. For example, if it's a Vue SFC related bug, it should likely be reported to https://github.com/vuejs/core instead.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion.
• The provided reproduction is a minimal reproducible example of the bug.