fix(reactivity): enhance reactive function to handle the WeakMap key

[FatRadish]

close #12807

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	100 kB	38.1 kB (+4 B)	34.4 kB (+63 B)
vue.global.prod.js	158 kB	58 kB (+3 B)	51.6 kB (-38 B)

Usages

Name	Size	Gzip	Brotli
createApp (CAPI only)	46.5 kB	18.2 kB (-1 B)	16.7 kB (-5 B)
createApp	54.6 kB	21.3 kB (+4 B)	19.4 kB (+6 B)
createSSRApp	58.8 kB	23 kB (-2 B)	21 kB (+39 B)
defineCustomElement	59.4 kB	22.9 kB (-2 B)	20.8 kB (+4 B)
overall	68.6 kB	26.4 kB (+3 B)	24 kB (+13 B)

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commit: 3cb45eb

[edison1105]

/ecosystem-ci run

[vue-bot]

📝 Ran ecosystem CI: Open

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