fix(useEyeDropper): improve SSR compatibility (#949)(#1301)

[zhowiny]

Description

Visit eyeDropper directly or after refreshing the page isSupported is true but the button is still disabled.

Additional context

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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[okxiaoliang4]

I'm not sure about this. Because isSupported of other functions is also not reactive

[zhowiny]

I'm not sure about this. Because isSupported of other functions is also not reactive

I found that other functions have similar problems, such as useClipboard. If the above method is determined to be effective, I can fix all places

[antfu]

That's a fair point. I will do the refector to change all isSupported to reactive when doing the refactor for the next major release.

[antfu]

Close in favor of #1800