fix(ghverify): fix avl tree iteration in `Render` and `GetFeedDefinitions` #8131

Job	Run time
Run Main (autocounterd) / Go Build / generated	8s
Run Main (autocounterd) / Go Linter / lint	25s
Run Main (autocounterd) / Go Test / test	46s
Run Main (docker-integration) / Go Build / generated	5s
Run Main (docker-integration) / Go Test / test	22s
Run Main (docker-integration) / Go Linter / lint	12s
Run Main (genproto) / Go Build / generated	9s
Run Main (genproto) / Go Linter / lint	30s
Run Main (genproto) / Go Test / test	39s
Run Main (genstd) / Go Linter / lint	26s
Run Main (genstd) / Go Test / test	27s
Run Main (genstd) / Go Build / generated	4s
Run Main (goscan) / Go Build / generated	11s
Run Main (goscan) / Go Test / test	24s
Run Main (goscan) / Go Linter / lint	13s
Run Main (logos) / Go Build / generated	5s
Run Main (logos) / Go Linter / lint	24s
Run Main (logos) / Go Test / test	52s
Run Main (loop) / Go Linter / lint	42s
Run Main (loop) / Go Build / generated	8s
Run Main (loop) / Go Test / test	43s
	7m 55s

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