fix(browser): don't redirect vitest in client environment

[sheremet-va]

With inline projects, the vitest:resolve-root plugin redirected vitest imports to the root server, which resolved them to raw dist files, while pre-bundled dependencies got the optimizer's copy of the runtime. The second copy has no runner state, failing any setup file that imports a package like vitest-browser-react. Both resolvers now stay out of the browser client environment, so everything resolves to the pre-bundled copy.

Also moves @vitest/browser/client from optimizeDeps.include to exclude: it is not resolvable from the project root under pnpm (see the Failed to resolve dependency warning in #10836), and the built file is self-contained, so pre-bundling it buys nothing.

Closes #10944

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[sheremet-va]

I'm gonna merge the fix to test it out in a new rc, the review is still welcome if anything is wrong

[silvenon]

That worked, thank you very much ❤️