fix: correctly resolve server function created by 3rd party package during dev

[hi-ogawa]

We might need "use server" equivalent of #1050. But this is for module runner, so we don't need too much worry about module identity. For now, we can just strip this.

Waku's ssr-basic ai/rsc example uses server action request like this, which caused an error:
http://localhost:3000/RSC/F/_/@fs/home/hiroshi/code/others/waku/node_modules/.pnpm/[email protected][email protected][email protected]/node_modules/ai/rsc/dist/rsc-server.mjs?v=63d9561c/$$hoist_0_innerAction.txt

Error: Invalid encoded rscPath
    at rscPath (/home/hiroshi/code/others/waku/packages/waku/src/lib/renderers/utils.ts:24:17)
    at handler (/home/hiroshi/code/others/waku/packages/waku/src/vite-rsc/entry.rsc.tsx:45:15)
    at async file:///home/hiroshi/code/others/waku/node_modules/.pnpm/@[email protected]/node_modules/@mjackson/node-fetch-server/dist/node-fetch-server.js:23:18 {
  statusCode: 400
}

todo

• test waku
• test here

[hi-ogawa]

• fix: correctly resolve server function created by 3rd party package during dev #1067 👈 (View in Graphite)
• main

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