refactor: fix phpdoc and improve code in `Language` (#9656) #13475

Job	Run time
Setup PHP Version for Code Coverage	2s
Others (8.3) / Sanity Tests	2m 34s
Others (8.4) / Sanity Tests	2m 37s
Others (8.1) / Sanity Tests	2m 39s
Others (8.2) / Sanity Tests	3m 41s
SeparateProcess (8.1) / tests	3m 38s
SeparateProcess (8.2) / tests	4m 22s
SeparateProcess (8.4) / tests	3m 45s
SeparateProcess (8.3) / tests	3m 38s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	6m 34s
DatabaseLive (8.2, MySQLi, 8.0) / tests	5m 21s
DatabaseLive (8.4, SQLite3, 8.0) / tests	2m 42s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 44s
DatabaseLive (8.1, MySQLi, 8.0) / tests	5m 6s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 21s
DatabaseLive (8.1, Postgre, 8.0) / tests	2m 33s
DatabaseLive (8.2, OCI8, 8.0) / tests	9m 5s
DatabaseLive (8.2, SQLite3, 8.0) / tests	3m 17s
DatabaseLive (8.1, SQLite3, 8.0) / tests	2m 44s
DatabaseLive (8.3, MySQLi, 8.0) / tests	4m 13s
DatabaseLive (8.4, Postgre, 8.0) / tests	2m 56s
DatabaseLive (8.4, MySQLi, 8.0) / tests	4m 26s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 5s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	4m 41s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	5m 4s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 38s
DatabaseLive (8.1, OCI8, 8.0) / tests	6m 49s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	5m 6s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 6s
DatabaseLive (8.1, MySQLi, 5.7) / tests	3m 39s
CacheLive (8.4) / Cache Live Tests	2m 6s
CacheLive (8.2) / Cache Live Tests	2m 15s
CacheLive (8.3) / Cache Live Tests	2m 9s
CacheLive (8.1) / Cache Live Tests	2m 20s
Upload coverage results to Coveralls / coveralls	53s
	2h 11m 49s

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