fix(cli)): fix brisa start to load correct brisa.config

[aralroca]

Fixes #661

after this PR the brisa start calls the standalone server and loads the constants correctly in the same way.

[pkg-pr-new]

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brisa-adapter-vercel

npm i https://pkg.pr.new/brisa-build/brisa/brisa-adapter-vercel@662

brisa

npm i https://pkg.pr.new/brisa-build/brisa@662

brisa-tailwindcss

npm i https://pkg.pr.new/brisa-build/brisa/brisa-tailwindcss@662

brisa-pandacss

npm i https://pkg.pr.new/brisa-build/brisa/brisa-pandacss@662

create-brisa

npm i https://pkg.pr.new/brisa-build/brisa/create-brisa@662

www

npm i https://pkg.pr.new/brisa-build/brisa/www@662

commit: a1b2788