feat: worker emit fileName with config

[poyoho]

Description

fix: #7613
fix: #7928
fix: #8089

Additional context

• this.getFilename will got a emitFile chunk’s fileName. So we can use this chunk’s fileName directly.
• we emit file with the other chunk fileName and the fileName is exist, Rollup will call warning. And we just need to don't modify fileName, the warning will not be called. we can use the entryFileNames, chunkFileNames, assetFileNames make the file into truth path.
• Rollup will make the same emitFile unique, we need to avoid call emitFile with same filename.
• I found that the sourcemap file name in other places is named after the file name of the original file plus the map. Take the same plan in worker sourcemap.

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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[poyoho]

Oh I miss one point.

Array.isArray(workerOutputConfig)
        ? workerOutputConfig[0] || {}
        : workerOutputConfig

It is always using the first item. Can we limit the type just accept object? @patak-dev

[patak-dev]

I saw this and it makes sense in this context. We could warn if there are two output options maybe