koordlet: fix prodReclaimablePredictor result to avoid influence of o… #8668

Job	Run time
golangci-lint	6m 50s
unit-tests(Check Go modules)	2m 5s
unit-tests(Check manifests)	1m 47s
unit-tests(Check auto-generated codes)	3m 12s
unit-tests(Verify gofmt)	1m 24s
unit-tests(Verify govet)	5m 13s
unit-tests(Run Go build)	4m 57s
unit-tests(Run Go test)	7m 5s
build-and-push	0s
	32m 33s

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