1. add coordinator and proxy graceful stop timeout to 5s.
3. add other work node graceful stop timeout to 900s, and we should
potentially change this to 600s when graceful stop is smooth
4. change the order of datacoord component while stop.
5. `LivenessCheck` do not perform graceful shutdown now.
issue: https://github.com/milvus-io/milvus/issues/30310
pr: #30317
also see: https://github.com/milvus-io/milvus/pull/30306
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Signed-off-by: chyezh <chyezh@outlook.com>
chyezh