Static type="checkbox" with v-bind (fix #7811)

[privatenumber]

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• Bugfix
• Feature
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• New/updated tests are included

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Other information:

[jkzing]

This would make following case lose type binding:

<input type="checkbox" v-model="test" v-bind="{type: typeBindingValue}">

So maybe

typeBinding = `(${map['v-bind']}).type || '${map.type}'`

---

EDIT: the one above is not comprehensive, while map.type still could be undefined.

typeBinding = `(${map['v-bind']}).type || ${JSON.stringify(map.type)}`

[posva]

@hirokiosame If you could add the test as well, that would be great 👌

[yyx990803]

I don't think we should allow v-bind to override a static type, it's gonna be confusing if done accidentally and I don't think there's a valid use case.