fix(v-once): setting hasOnce to current block only when in v-once

[edison1105]

close #12371

[github-actions[bot]]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	100 kB (+8 B)	38 kB (+3 B)	34.2 kB (+24 B)
vue.global.prod.js	159 kB (+62 B)	57.9 kB (+29 B)	51.5 kB (+80 B)

Usages

Name	Size	Gzip	Brotli
createApp (CAPI only)	46.9 kB (+22 B)	18.3 kB (+10 B)	16.7 kB (+15 B)
createApp	55 kB (+22 B)	21.3 kB (+16 B)	19.5 kB (+80 B)
createSSRApp	59 kB (+22 B)	23 kB (+12 B)	20.9 kB (-71 B)
defineCustomElement	59.8 kB (+22 B)	22.8 kB (+6 B)	20.8 kB (+11 B)
overall	68.7 kB (+8 B)	26.4 kB (+4 B)	24 kB (-26 B)

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@vue/compiler-core

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@vue/compiler-dom

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@vue/compiler-ssr

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@vue/compiler-sfc

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@vue/reactivity

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@vue/runtime-core

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@vue/runtime-dom

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@vue/server-renderer

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@vue/shared

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vue

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@vue/compat

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commit: 2127485