fix(runtime-core): respect immutability for readonly reactive arrays in v-for

[jh-leong]

close #13087

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	100 kB (+28 B)	38.2 kB (+14 B)	34.4 kB (+33 B)
vue.global.prod.js	158 kB (+28 B)	58.2 kB (+15 B)	51.8 kB (-34 B)

Usages

Name	Size	Gzip	Brotli
createApp (CAPI only)	46.4 kB	18.1 kB	16.6 kB
createApp	54.4 kB	21.2 kB	19.4 kB
createSSRApp	58.6 kB	22.9 kB	20.9 kB
defineCustomElement	59.2 kB	22.7 kB	20.7 kB
overall	68.4 kB	26.3 kB	24 kB

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commit: d834fe1

[jh-leong]

/ecosystem-ci run

[vue-bot]

📝 Ran ecosystem CI: Open

suite	result	latest scheduled
pinia	✅ success	✅ success
language-tools	✅ success	✅ success
quasar	✅ success	✅ success
radix-vue	✅ success	✅ success
nuxt	✅ success	✅ success
primevue	✅ success	✅ success
vant	✅ success	✅ success
router	✅ success	✅ success
vitepress	✅ success	✅ success
vue-simple-compiler	✅ success	✅ success
test-utils	✅ success	✅ success
vue-macros	✅ success	✅ success
vite-plugin-vue	✅ success	✅ success
vuetify	✅ success	✅ success
vue-i18n	✅ success	✅ success
vueuse	✅ success	✅ success