fix(reactivity): handle non-array arguments in reactive concat method

[jh-leong]

close #11792

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	100 kB (+7 B)	37.7 kB (+5 B)	33.9 kB (+5 B)
vue.global.prod.js	159 kB (+7 B)	57.5 kB (+3 B)	51.1 kB (-39 B)

Usages

Name	Size	Gzip	Brotli
createApp	55.1 kB (+7 B)	21.2 kB (+3 B)	19.3 kB (-1 B)
createSSRApp	59.1 kB (+7 B)	22.9 kB (+3 B)	20.9 kB (+44 B)
defineCustomElement	59.8 kB (+7 B)	22.7 kB (+3 B)	20.7 kB (+5 B)
overall	68.8 kB (+7 B)	26.3 kB (+2 B)	23.9 kB (-9 B)

[pkg-pr-new]

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@vue/compiler-core

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@vue/compiler-dom

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@vue/compiler-sfc

pnpm add https://pkg.pr.new/@vue/compiler-sfc@11794

@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/compat

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vue

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@vue/compiler-ssr

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commit: c747cdb

[shaunakv1]

LGTM. Fixes the original issue