feat: add feature switch to use SSA for managing finalizer #5265

Job	Run time
sample_operators_tests (sample-operators/tomcat-operator)	3m 8s
sample_operators_tests (sample-operators/leader-election)	4m 7s
sample_operators_tests (sample-operators/webpage)	3m 4s
sample_operators_tests (sample-operators/mysql-schema)	2m 50s
	13m 9s

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