Minimize patches

[ealmloff]

Currently we need two patches on top of upstream wasm bindgen:

• Lazy thread locals in js-sys that assume there is one javascript context per thread. We have many contexts per thread with multi-window desktop apps. Reuse LazyCell in js-sys wasm-bindgen/wasm-bindgen#5172 moves the lazy logic into core and lets us remove the patch
• Wasm-bindgen-futures microtask semantics mismatch (Take over the event loop #27)
• Cargo.toml patches to depend on our version of wasm-bindgen (wasm-bindgen-x) so that we can rely on a published version of web-sys-x in dioxus-desktop