CompilerDOM.compile incorrectly parsing `<template v-if="true" :key>`

[so1ve]

Vue version

3.4.31

Link to minimal reproduction

https://ast.sxzz.moe/#eNpVjMEKwjAQRH8l7KWXBg/eQu03eDceJK4STDZLsimW0n83UhDLXGaGx1sggIGpIvTAWzvqe4rapcg+fG/X7kEwcrgJjpaU+i01af84WZBc0YIyL5zH4fDH7kZzpebKKDWTWixZ2YJvzliKT3QO9empGHXpZGYsLnuW7to3llZYP8C1PHY=

Steps to reproduce

<template>
  <template v-if="true" :key></template>
</template>

What is expected?

Should produce userKey in ast.

What is actually happening?

It doesn't

System Info

No response

Any additional comments?

No response