refactor: simplify `FileLocator::listFiles()` (#10142) #174

Job	Run time
Setup PHP Version for Code Coverage	3s
Others (8.3) / Sanity Tests	1m 25s
Others (8.5) / Sanity Tests	2m 14s
Others (8.2) / Sanity Tests	3m 4s
Others (8.4) / Sanity Tests	1m 28s
SeparateProcess (8.2) / tests	2m 5s
SeparateProcess (8.3) / tests	2m 12s
SeparateProcess (8.5) / tests	2m 20s
CacheLive (8.2) / Cache Live Tests	1m 13s
CacheLive (8.5) / Cache Live Tests	1m 33s
SeparateProcess (8.4) / tests	2m 6s
CacheLive (8.3) / Cache Live Tests	1m 10s
DatabaseLive (8.4, OCI8, 8.0) / tests	7m 6s
DatabaseLive (8.3, Postgre, 8.0) / tests	1m 42s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	5m 22s
DatabaseLive (8.3, MySQLi, 8.0) / tests	2m 59s
DatabaseLive (8.5, SQLite3, 8.0) / tests	1m 18s
DatabaseLive (8.2, MySQLi, 5.7) / tests	3m 20s
DatabaseLive (8.2, OCI8, 8.0) / tests	8m 21s
DatabaseLive (8.4, MySQLi, 8.0) / tests	3m 15s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	6m 28s
DatabaseLive (8.4, SQLite3, 8.0) / tests	1m 3s
DatabaseLive (8.5, SQLSRV, 8.0) / tests	5m 0s
DatabaseLive (8.5, Postgre, 8.0) / tests	1m 47s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	4m 54s
DatabaseLive (8.2, Postgre, 8.0) / tests	2m 49s
DatabaseLive (8.4, Postgre, 8.0) / tests	1m 52s
DatabaseLive (8.3, OCI8, 8.0) / tests	7m 33s
DatabaseLive (8.5, OCI8, 8.0) / tests	10m 59s
DatabaseLive (8.2, MySQLi, 8.0) / tests	4m 30s
DatabaseLive (8.3, SQLite3, 8.0) / tests	1m 6s
DatabaseLive (8.5, MySQLi, 8.0) / tests	3m 33s
DatabaseLive (8.2, SQLite3, 8.0) / tests	2m 15s
CacheLive (8.4) / Cache Live Tests	1m 9s
Upload coverage results to Coveralls	0s
	1h 49m 14s

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