fix: support array indexes in `getPostGet()` and `getGetPost()` #15649

Job	Run time
Setup PHP Version for Code Coverage	3s
Others (8.5) / Sanity Tests	1m 20s
Others (8.2) / Sanity Tests	2m 38s
Others (8.3) / Sanity Tests	1m 19s
Others (8.4) / Sanity Tests	1m 20s
CacheLive (8.3) / Cache Live Tests	1m 7s
CacheLive (8.5) / Cache Live Tests	1m 2s
CacheLive (8.2) / Cache Live Tests	1m 18s
CacheLive (8.4) / Cache Live Tests	1m 8s
SeparateProcess (8.5) / tests	2m 2s
SeparateProcess (8.3) / tests	2m 8s
SeparateProcess (8.2) / tests	2m 9s
SeparateProcess (8.4) / tests	2m 6s
DatabaseLive (8.5, SQLSRV, 8.0) / tests	5m 8s
DatabaseLive (8.5, SQLite3, 8.0) / tests	1m 4s
DatabaseLive (8.2, OCI8, 8.0) / tests	7m 6s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	5m 33s
DatabaseLive (8.4, Postgre, 8.0) / tests	1m 40s
DatabaseLive (8.4, SQLite3, 8.0) / tests	1m 13s
DatabaseLive (8.2, SQLite3, 8.0) / tests	2m 9s
DatabaseLive (8.2, MySQLi, 5.7) / tests	3m 18s
DatabaseLive (8.3, SQLite3, 8.0) / tests	1m 4s
DatabaseLive (8.3, MySQLi, 8.0) / tests	4m 5s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	4m 38s
DatabaseLive (8.5, Postgre, 8.0) / tests	1m 41s
DatabaseLive (8.2, Postgre, 8.0) / tests	2m 50s
DatabaseLive (8.3, Postgre, 8.0) / tests	1m 46s
DatabaseLive (8.5, OCI8, 8.0) / tests	6m 47s
DatabaseLive (8.4, OCI8, 8.0) / tests	7m 20s
DatabaseLive (8.3, OCI8, 8.0) / tests	7m 23s
DatabaseLive (8.4, MySQLi, 8.0) / tests	4m 38s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	4m 43s
DatabaseLive (8.2, MySQLi, 8.0) / tests	4m 47s
DatabaseLive (8.5, MySQLi, 8.0) / tests	3m 31s
Upload coverage results to Coveralls / coveralls	38s
	1h 42m 42s

Provide feedback