[pkg/ottl] Support dynamic indexing #47304

Job	Run time
collector-build	6m 15s
docker-build	6m 23s
supervisor-test	2m 57s
kubernetes-test-matrix (v1.30.0, receiver/k8sclusterreceiver)	6m 31s
kubernetes-test-matrix (v1.30.0, processor/k8sattributesprocessor)	6m 27s
kubernetes-test-matrix (v1.30.0, receiver/kubeletstatsreceiver)	4m 17s
kubernetes-test-matrix (v1.30.0, receiver/k8sobjectsreceiver)	3m 3s
kubernetes-test-matrix (v1.23.17, receiver/k8sclusterreceiver)	6m 40s
kubernetes-test-matrix (v1.23.17, processor/k8sattributesprocessor)	6m 51s
kubernetes-test-matrix (v1.23.17, receiver/kubeletstatsreceiver)	4m 17s
kubernetes-test-matrix (v1.23.17, receiver/k8sobjectsreceiver)	3m 17s
kubernetes-test	1s
	56m 59s

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