fix(logs): no longer output group prefixes if no logs present#10760

chris-olszewski merged 1 commit intomainvercel/turborepo:mainfrom

chrisolszewski/turbo-4810-grouped-errors-only-logs-show-empty-groupsvercel/turborepo:chrisolszewski/turbo-4810-grouped-errors-only-logs-show-empty-groupsCopy head branch name to clipboard