`wasm-bindgen-futures`: use `queueMicrotask` for next tick runs (#3203) #1417

Job	Run time
build_nightly	2m 21s
build_examples	4m 51s
Check	1m 36s
build_benchmarks	1m 22s
Clippy	8m 31s
Verify that web-sys is compiled correctly	1m 24s
dist_linux_aarch64_gnu	4m 25s
dist_linux_x86_64_musl	4m 12s
dist_macos_aarch64	3m 42s
dist_macos_x86_64	3m 26s
dist_windows	5m 48s
doc_api	1m 46s
doc_book	26s
Rustfmt	18s
Build and test the deno example	1m 35s
Run js-sys crate tests	3m 8s
Run native tests	2m 34s
Run wasm-bindgen crate tests with multithreading enabled	2m 3s
Test TypeScript output of wasm-bindgen	1m 56s
Run UI compile-fail tests	3m 57s
Run wasm-bindgen crate tests (unix)	11m 40s
Run web-sys crate tests	7m 41s
Run wasm-bindgen-webidl crate tests	3m 45s
test_examples	3m 47s
deploy	1m 9s
	1h 27m 23s

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