chore: replace rollup-plugin-esbuild with unplugin-oxc

[hi-ogawa]

Description

• follow up to chore: use unplugin-isolated-decl with oxc-transform for dts build #7609, chore: switch to oxc for dts & typescript transform #7472

Almost done by just mechanical find&replace 😄

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[AriPerkkio]

/ecosystem-ci run

[vitest-ecosystem-ci]

📝 Ran ecosystem CI: Open

suite	result
aria-live-capture	✅ success
vite	✅ success
lerna-lite	✅ success
elk	❌ failure
nuxt	❌ failure
vitest-browser-examples	✅ success
vitest-reporters-large	✅ success
vitest-coverage-large	✅ success
nuxt-test-utils	❌ failure
vitest-sonar-reporter	✅ success
vitest-benchmark-large	✅ success
effect	❌ failure
zustand	✅ success
vue	✅ success
vitest-vscode	✅ success

[AriPerkkio]

Looks good. Ecosystem failures are on main too.

When can we use Rolldown directly? 🥲

[hi-ogawa]

When can we use Rolldown directly? 🥲

rollup-plugin-dts isn't possible on rolldown, so we need to explore a way to ship unbundled .d.ts first. Otherwise, we'll still need rollup + rollup-plugin-dts as a post build of rolldown, which is what tsdown https://github.com/sxzz/tsdown does, we could try that too.