fix(astro): build config from astro conflict with vite.config.js

[rayriffy]

Changes

• configFile: false added to specifically tell Vite not to automatically find, read, and merge config from vite.config.js. which could conflict with Astro's vite config (docs)

fixes #8702

Testing

N/A

Docs

N/A. Docs already said in the way to modify Vite behavior via astro.config.mjs

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[ematipico]

@rayriffy I think you want to have the configuration here.

So it has effects on the dev server too.

[rayriffy]

I agree, I forgot to trace back to see where the origin of common config itself is. Change has been revised.