Audit js.node.web for Node 24 web globals

[kevinresol]

Summary

• Audit and expand js.node.web against Node.js 24 web platform globals (undici fetch + EventTarget family + streams/messaging).
• Drop Haxe 3 #if haxe4 import branches; keep Haxe 4 js.lib.* only.
• Replace loose Dynamic with Any / concrete types where clear; type Blob.stream() / Request/Response.body as ReadableStream.
• Add missing globals: web streams (+ controllers/readers/writers), compression streams, queuing strategies, BroadcastChannel/MessageChannel/MessagePort/MessageEvent, WebSocket/CloseEvent, EventSource, Navigator/LockManager, Storage, global TextEncoder/TextDecoder (+ stream variants).
• Fetch/Request accept URL; Request gains isHistoryNavigation / isReloadNavigation.

Coordination TODOs

• section-1: wire globals on js.Node / globalThis facade (fetch, Abort*, Event*, Blob/File, Navigator, Storage, TextEncoder/Decoder, …).
• section-4: URLPattern global (URL package affinity); align js.node.util.TextEncoder with global encodeInto if desired; webcrypto remains crypto-util.
• section-5: tighten MessagePort.postMessage transfer list once worker_threads transferables exist.
• section-6 (follow-ups): undici Dispatcher typing for RequestInit / WebSocket / EventSource; deeper BYOB/underlying-source callback typing if needed.

Test plan

• haxe build.hxml (ImportAll + examples) succeeds
• Spot-check new types against Node 24 docs / undici behavior
• Confirm section-1 wiring after merge coordination

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