chore: switch to oxc for dts & typescript transform

[sxzz]

Description

Requires #7473 first.

WIP: Migrated @vitest/browser only.

• Replaced rollup-plugin-esbuild and @rollup/plugin-node-resolve with unplugin-oxc. There are some issues with resolving, so still using @rollup/plugin-node-resolve.
• Enabled isolatedDeclarations, generated dts with unplugin-isolated-decl, and bundled dts using the original rollup-plugin-dts

Result

Running on my machine: pnpm run build:node in @vitest/browser is now 7.1x faster

Before: 7.28 secs
After: 1.02 secs

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Tests

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[Boshen]

It seems like we can get "isolatedDeclarations": true merged first, to ease the transition to oxc.

[sheremet-va]

just a note, but most packages in the monorepo already have isolatedDeclarations enabled and can just switch to the oxc plugin

[TonyPythoneer]

Just putting my two cents in.

I found that some changes involve adding type annotations.
It may be better to extract from these changes and merge them into the main branch if it doesn't affect the logic.
It'd be easy to see the integration with oxc.

[sxzz]

Yes, as mentioned, the required PR is #7473.