Changed `write` functions of FileSystemSyncAccessHandle to accept immutable buffers #1286

Job	Run time
build_benchmarks	1m 7s
build_nightly	2m 12s
build_examples	5m 5s
Check	1m 52s
Verify that web-sys is compiled correctly	1m 36s
Clippy	5m 40s
dist_linux_aarch64_gnu	4m 51s
dist_linux_x86_64_musl	3m 14s
dist_macos_aarch64	3m 55s
dist_macos_x86_64	4m 34s
dist_windows	5m 38s
doc_api	1m 39s
doc_book	16s
Rustfmt	10s
Build and test the deno example	1m 21s
Run js-sys crate tests	3m 15s
Run native tests	3m 29s
Run wasm-bindgen crate tests with multithreading enabled	1m 56s
Test TypeScript output of wasm-bindgen	1m 40s
Run UI compile-fail tests	2m 19s
Run wasm-bindgen crate tests (unix)	10m 27s
Run web-sys crate tests	12m 3s
Run wasm-bindgen-webidl crate tests	3m 40s
test_examples	3m 8s
deploy	1m 47s
	1h 26m 54s

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