refactor: rename `stdclass` to `stdClass` #12589

Job	Run time
Setup PHP Version for Code Coverage	1s
Others (8.2) / Sanity Tests	3m 39s
Others (8.3) / Sanity Tests	2m 15s
Others (8.1) / Sanity Tests	2m 18s
CacheLive (8.1) / Cache Live Tests	1m 54s
CacheLive (8.2) / Cache Live Tests	2m 12s
CacheLive (8.3) / Cache Live Tests	1m 58s
SeparateProcess (8.1) / tests	3m 22s
SeparateProcess (8.2) / tests	3m 11s
SeparateProcess (8.3) / tests	3m 25s
DatabaseLive (8.1, MySQLi, 5.7) / tests	2m 35s
DatabaseLive (8.1, MySQLi, 8.0) / tests	3m 42s
DatabaseLive (8.1, OCI8, 8.0) / tests	5m 30s
DatabaseLive (8.1, Postgre, 8.0) / tests	2m 21s
DatabaseLive (8.1, SQLite3, 8.0) / tests	2m 25s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	4m 35s
DatabaseLive (8.2, MySQLi, 8.0) / tests	5m 3s
DatabaseLive (8.2, OCI8, 8.0) / tests	6m 42s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 1s
DatabaseLive (8.2, SQLite3, 8.0) / tests	3m 4s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	4m 50s
DatabaseLive (8.3, MySQLi, 8.0) / tests	4m 7s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 2s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 24s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 15s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	4m 8s
Upload coverage results to Coveralls / coveralls	43s
	1h 27m 42s

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