Use functools.cached_property (#40607)
* cached_property is avaiable in functools
Signed-off-by: cyy <cyyever@outlook.com>
* Remove cached_property
Signed-off-by: cyy <cyyever@outlook.com>
* Fix docs
Signed-off-by: Yuanyuan Chen <cyyever@outlook.com>
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Signed-off-by: cyy <cyyever@outlook.com>
Signed-off-by: Yuanyuan Chen <cyyever@outlook.com>
