fix: support array indexes in `getPostGet()` and `getGetPost()` #15651

Job	Run time
Setup PHP Version for Code Coverage	4s
Others (8.2) / Sanity Tests	2m 39s
Others (8.3) / Sanity Tests	1m 33s
Others (8.4) / Sanity Tests	1m 43s
Others (8.5) / Sanity Tests	1m 35s
SeparateProcess (8.2) / tests	2m 13s
SeparateProcess (8.4) / tests	2m 3s
SeparateProcess (8.5) / tests	2m 11s
CacheLive (8.2) / Cache Live Tests	1m 18s
SeparateProcess (8.3) / tests	2m 0s
CacheLive (8.3) / Cache Live Tests	1m 2s
CacheLive (8.4) / Cache Live Tests	1m 6s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 57s
CacheLive (8.5) / Cache Live Tests	1m 14s
DatabaseLive (8.4, MySQLi, 8.0) / tests	3m 31s
DatabaseLive (8.4, Postgre, 8.0) / tests	1m 37s
DatabaseLive (8.2, MySQLi, 5.7) / tests	3m 4s
DatabaseLive (8.2, MySQLi, 8.0) / tests	4m 26s
DatabaseLive (8.5, MySQLi, 8.0) / tests	4m 8s
DatabaseLive (8.2, SQLite3, 8.0) / tests	1m 57s
DatabaseLive (8.5, SQLite3, 8.0) / tests	1m 22s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	6m 2s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 2s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	6m 27s
DatabaseLive (8.3, Postgre, 8.0) / tests	1m 53s
DatabaseLive (8.5, Postgre, 8.0) / tests	1m 59s
DatabaseLive (8.5, OCI8, 8.0) / tests	6m 43s
DatabaseLive (8.3, MySQLi, 8.0) / tests	3m 59s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	5m 18s
DatabaseLive (8.3, SQLite3, 8.0) / tests	1m 7s
DatabaseLive (8.4, SQLite3, 8.0) / tests	1m 9s
DatabaseLive (8.3, OCI8, 8.0) / tests	7m 34s
DatabaseLive (8.5, SQLSRV, 8.0) / tests	4m 47s
DatabaseLive (8.2, OCI8, 8.0) / tests	8m 37s
Upload coverage results to Coveralls / coveralls	38s
	1h 46m 58s

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