feat: primary resource caching for followup reconciliation(s) #5055

Job	Run time
sample_operators_tests (sample-operators/mysql-schema)	2m 31s
sample_operators_tests (sample-operators/tomcat-operator)	2m 48s
sample_operators_tests (sample-operators/webpage)	2m 55s
sample_operators_tests (sample-operators/leader-election)	3m 4s
	11m 18s

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