refactor: PHPDocs in `env()` #13013

Job	Run time
Setup PHP Version for Code Coverage	2s
Others (8.1) / Sanity Tests	2m 38s
Others (8.2) / Sanity Tests	3m 59s
Others (8.3) / Sanity Tests	2m 42s
Others (8.4) / Sanity Tests	3m 0s
SeparateProcess (8.2) / tests	3m 22s
SeparateProcess (8.1) / tests	3m 37s
SeparateProcess (8.3) / tests	3m 22s
SeparateProcess (8.4) / tests	3m 6s
DatabaseLive (8.1, Postgre, 8.0) / tests	2m 59s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 10s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 38s
DatabaseLive (8.2, MySQLi, 8.0) / tests	5m 18s
DatabaseLive (8.1, MySQLi, 8.0) / tests	5m 30s
DatabaseLive (8.3, MySQLi, 8.0) / tests	5m 16s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	4m 15s
DatabaseLive (8.4, MySQLi, 8.0) / tests	5m 22s
DatabaseLive (8.3, OCI8, 8.0) / tests	5m 59s
DatabaseLive (8.2, SQLite3, 8.0) / tests	3m 52s
DatabaseLive (8.1, OCI8, 8.0) / tests	6m 13s
DatabaseLive (8.1, SQLite3, 8.0) / tests	2m 48s
DatabaseLive (8.4, Postgre, 8.0) / tests	2m 30s
DatabaseLive (8.4, SQLite3, 8.0) / tests	2m 58s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	4m 57s
DatabaseLive (8.2, OCI8, 8.0) / tests	6m 35s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	5m 31s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 1s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	4m 50s
DatabaseLive (8.1, MySQLi, 5.7) / tests	2m 42s
CacheLive (8.2) / Cache Live Tests	2m 34s
CacheLive (8.3) / Cache Live Tests	2m 15s
CacheLive (8.1) / Cache Live Tests	2m 12s
CacheLive (8.4) / Cache Live Tests	2m 3s
DatabaseLive (8.3, SQLite3, 8.0) / tests	3m 11s
Upload coverage results to Coveralls / coveralls	51s
	2h 8m 18s

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