Add TypeScript declaration for the queueMicrotask global

[BilalWalker]

Summary:

React Native installs a queueMicrotask global on every app (Libraries/Core/setUpTimers.js, backed by Libraries/Core/Timers/queueMicrotask.js), but src/types/globals.d.ts never declared it. The shipped TypeScript config (@react-native/typescript-config) uses pure ES libs, so TypeScript users without lib: ["dom"] hit:

Cannot find name 'queueMicrotask'.

This is the same gap as requestIdleCallback (#58565, fixed in #57545), performance (#58610, #58831) and TextEncoder/TextDecoder (#56325, #56326). queueMicrotask was called out as missing in #58610 (comment) (by @johnnycheng0210) and has no PR yet.

This declares queueMicrotask(callback: () => void): void next to the other timer globals, matching the runtime implementation, and adds a type test.

Changelog:

[GENERAL] [ADDED] - Add TypeScript declaration for the queueMicrotask global

Test Plan:

yarn test-typescript-legacy      # passes (includes __typetests__/globals.tsx)
npx eslint --max-warnings 0 packages/react-native/src/types/globals.d.ts packages/react-native/__typetests__/globals.tsx   # clean
prettier --check on both files   # clean

The new testQueueMicrotask type test covers the valid call shape and uses @ts-expect-error for a missing argument, a non-function argument and an extra argument.

yarn build-types + yarn test-generated-typescript could not be run locally: build-types fails on Windows before reaching this change (Failed to build packages\react-native\index.js.flow path handling), so I am relying on the build_js_types CI job for that check.

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