refactor: fix phpdoc and improve code in `Language` #13467

Job	Run time
Setup PHP Version for Code Coverage	3s
Others (8.1) / Sanity Tests	2m 36s
Others (8.3) / Sanity Tests	2m 57s
Others (8.2) / Sanity Tests	4m 13s
Others (8.4) / Sanity Tests	2m 37s
SeparateProcess (8.1) / tests	1m 36s
SeparateProcess (8.2) / tests	1m 22s
SeparateProcess (8.3) / tests	1m 15s
SeparateProcess (8.4) / tests	41s
DatabaseLive (8.3, SQLite3, 8.0) / tests	3m 43s
DatabaseLive (8.4, SQLite3, 8.0) / tests	57s
DatabaseLive (8.1, MySQLi, 5.7) / tests	3m 43s
DatabaseLive (8.4, MySQLi, 8.0) / tests	1s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	1s
DatabaseLive (8.2, SQLite3, 8.0) / tests	1s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	3m 43s
DatabaseLive (8.2, Postgre, 8.0) / tests	1s
DatabaseLive (8.4, Postgre, 8.0) / tests	3m 43s
DatabaseLive (8.4, OCI8, 8.0) / tests	1s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	1s
DatabaseLive (8.1, SQLite3, 8.0) / tests	1s
DatabaseLive (8.2, MySQLi, 8.0) / tests	1s
DatabaseLive (8.1, OCI8, 8.0) / tests	1s
DatabaseLive (8.3, OCI8, 8.0) / tests	1s
DatabaseLive (8.1, Postgre, 8.0) / tests	1s
DatabaseLive (8.1, MySQLi, 8.0) / tests	3m 42s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	3m 43s
DatabaseLive (8.3, MySQLi, 8.0) / tests	3m 43s
DatabaseLive (8.2, OCI8, 8.0) / tests	1s
DatabaseLive (8.3, Postgre, 8.0) / tests	3m 43s
CacheLive (8.1) / Cache Live Tests	1s
CacheLive (8.2) / Cache Live Tests	1s
CacheLive (8.4) / Cache Live Tests	1s
CacheLive (8.3) / Cache Live Tests	1s
Upload coverage results to Coveralls	0s
	48m 16s

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