refactor: fix phpdoc and improve code in `Language` #13468

Job	Run time
Setup PHP Version for Code Coverage	3s
Others (8.2) / Sanity Tests	3m 52s
Others (8.1) / Sanity Tests	2m 49s
Others (8.3) / Sanity Tests	2m 36s
Others (8.4) / Sanity Tests	2m 38s
SeparateProcess (8.1) / tests	3m 26s
SeparateProcess (8.2) / tests	3m 55s
SeparateProcess (8.3) / tests	3m 24s
SeparateProcess (8.4) / tests	3m 25s
CacheLive (8.2) / Cache Live Tests	2m 21s
CacheLive (8.1) / Cache Live Tests	1m 58s
CacheLive (8.3) / Cache Live Tests	2m 11s
CacheLive (8.4) / Cache Live Tests	2m 21s
DatabaseLive (8.3, MySQLi, 8.0) / tests	4m 8s
DatabaseLive (8.2, MySQLi, 8.0) / tests	4m 49s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 52s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 44s
DatabaseLive (8.1, OCI8, 8.0) / tests	6m 31s
DatabaseLive (8.4, Postgre, 8.0) / tests	2m 49s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	5m 53s
DatabaseLive (8.1, MySQLi, 5.7) / tests	3m 21s
DatabaseLive (8.2, SQLite3, 8.0) / tests	3m 37s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	5m 44s
DatabaseLive (8.1, MySQLi, 8.0) / tests	5m 7s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 5s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 23s
DatabaseLive (8.4, MySQLi, 8.0) / tests	4m 5s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	5m 48s
DatabaseLive (8.2, OCI8, 8.0) / tests	7m 1s
DatabaseLive (8.1, SQLite3, 8.0) / tests	2m 34s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	5m 14s
DatabaseLive (8.1, Postgre, 8.0) / tests	3m 11s
DatabaseLive (8.4, SQLite3, 8.0) / tests	3m 6s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 6s
Upload coverage results to Coveralls / coveralls	37s
	2h 9m 44s

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