feat: primary resource caching for followup reconciliation(s) #5094

Job	Run time
sample_operators_tests (sample-operators/tomcat-operator)	2m 20s
sample_operators_tests (sample-operators/webpage)	2m 55s
sample_operators_tests (sample-operators/leader-election)	3m 0s
sample_operators_tests (sample-operators/mysql-schema)	2m 46s
	11m 1s

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