Fix `cylc lint` U013/U015 missing info #7891

Job	Run time
1/4	12m 25s
2/4	11m 51s
3/4	12m 2s
4/4	12m 33s
py-3-latest	11m 0s
flaky	6m 12s
_remote_background_indep_poll	4m 58s
_remote_background_indep_tcp	7m 15s
macos 1/5	15m 57s
macos 2/5	16m 29s
codecov	1s
	1h 50m 43s

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