feat(ssr): introduce ssrClearCompileCache

[edison1105]

close #7947
Allow users to clear the SSR compile cache, such as through a node-cron scheduled task, to release memory. Using lru cache might help alleviate continuous memory growth, but it cannot completely prevent the OOM issue.

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	102 kB (+314 B)	38.4 kB (+125 B)	34.6 kB (+128 B)
vue.global.prod.js	160 kB (+400 B)	58.3 kB (+194 B)	51.9 kB (+223 B)

Usages

Name	Size	Gzip	Brotli
createApp (CAPI only)	47.1 kB (+161 B)	18.5 kB (+60 B)	16.9 kB (+83 B)
createApp	55.7 kB (+256 B)	21.6 kB (+120 B)	19.7 kB (+127 B)
createSSRApp	59.9 kB (+262 B)	23.3 kB (+130 B)	21.2 kB (+108 B)
defineCustomElement	60.5 kB (+256 B)	23.2 kB (+119 B)	21.1 kB (+116 B)
overall	69.8 kB (+272 B)	26.7 kB (+110 B)	24.3 kB (+147 B)

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commit: 5177f16

[alex-snezhko]

Should a similar function be exposed for the compileCache used in packages/vue/src/index.ts -> compileToFunction?

[edison1105]

Probably not needed, SSR needs it because the compileCache is retained in the server process.