Fix package bundled TS type check (#5867)

**What's the problem this PR addresses?**
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The existence of bundled TS types are not detected on some package page
(e.g. [xterm-headless](https://yarnpkg.com/package?name=xterm-headless))


![image](https://github.com/yarnpkg/berry/assets/41266433/65532dc2-cacc-46ff-8d24-17560681f9bb)

**How did you fix it?**
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The check was resolving the main (JS) entrypoint of the package then
checking for an adjacent `.ts`, `.tsx` or `.d.ts` file. It should
instead prioritize type entrypoints (`types` and `typings` fields in
`pacakge.json`, `types` condition) before falling back to the main
entrypoint.

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packages/docusaurus/src/lib/packageChecks.tsx

@@ -141,8 +141,8 @@ export const checks: Array<Check> = [{
       name,
       version,
     }, {
-      mainFields: [`main`, `types`, `typings`],
-      conditions: [`default`, `require`, `import`, `node`, `types`],
+      mainFields: [`types`, `typings`, `main`],
+      conditions: [`types`, `default`, `require`, `import`, `node`],
       extensions,
     });