fix(types): move timer declarations into declare-global so bare calls resolve them

[axuj]

Problem

The four timer declarations in js_libraries/types/types/common/global.d.ts sit outside the file's declare global {} block. That file is a module (top-level imports), so these module-scoped declare functions are private — bare-global call sites in application code never resolve to them. Every ReactLynx/Rspeedy project instead falls back to injected @types/node or DOM signatures, which accept forwarded extra args.

Lynx host timers actually drop forwarded args and fire the callback zero-arg (core/runtime/js/bindings/js_app.cc, core/runtime/lepusng/napi/worklet/napi_lepus_lynx.cc — both consume only callback+delay and invoke with an empty arg list), so code like setTimeout(fn, ms, arg) passes typecheck yet silently breaks on device.

Our project hit this exact bug: a bottom-sheet close callback scheduled via setTimeout(fn, duration, target, dismiss, generation) worked on web and never fired on device, leaving UI state stuck (icon never reset).

Evidence in this repo

examples/vanilla/src/rspeedy-env.d.ts already works around it by hand:

import type { LynxSetTimeout } from '@lynx-js/types';
declare global { const setTimeout: LynxSetTimeout; }

Fix

Move the four declarations inside the existing declare global {} block so they reach global scope. Signatures unchanged; misleading parameter name number renamed to delay.

Validation

• Package tsc --noEmit ✅

• Package vitest --typecheck --run: 24 files / 85 tests ✅

• Minimal consumer repro: axuj/lynx-types-timer-repro — open it directly in StackBlitz (WebContainers, zero setup):
  https://stackblitz.com/github/axuj/lynx-types-timer-repro?file=README.md

  In the StackBlitz terminal:

  npm run before   # shipped package:
                   # TS2304: Cannot find name 'setTimeout' / 'clearTimeout'
  npm run after    # patched copy via typeRoots:
                   # two-arg calls resolve; forwarded call → TS2554

npm run after proves both halves of the fix: bare two-arg calls resolve against the mounted declarations, and forwarded-extra-arg calls fail typecheck with TS2554, matching real device behavior.

[cla-assistant]

All committers have signed the CLA.