chore: align the `token` method semantics #7344

Job	Run time
build-c-doc	14s
build-cpp-doc	19s
build-dav-server-opendalfs-doc	46s
build-haskell-doc	9m 48s
build-fuse3-opendal-doc	39s
build-java-doc	21s
build-lua-doc	7s
build-nodejs-doc	19s
build-object-store-opendal-doc	44s
build-ocaml-doc	5m 11s
build-parquet-opendal-doc	40s
build-python-doc	2m 48s
build-rust-doc	4m 19s
build-unftp-sbe-opendal-doc	1m 3s
build-virtiofs-opendal-doc	39s
build-website	2m 7s
	30m 4s

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