[RayService][refactor] Remove `updateState` #6975

Job	Run time
Build Apiserver and Docker Images	3m 23s
Build security proxy Binaries and Docker Images	1m 28s
Lint (pre-commit)	3m 19s
Build Ray Kubectl plugin	2m 51s
Build Operator Binaries and Docker Images	6m 14s
Python Client Test	1m 5s
Compatibility Test - 2.8.0	6m 41s
Compatibility Test - 2.9.0	10m 34s
Compatibility Test - 2.7.0	10m 57s
Compatibility Test - Nightly	8m 43s
	55m 15s

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