refactor: simplify and optimize handleRequest method in CodeIgniter #15794

Job	Run time
Setup PHP Version for Code Coverage	2s
Others (8.3) / Sanity Tests	1m 40s
Others (8.4) / Sanity Tests	1m 26s
Others (8.2) / Sanity Tests	2m 35s
Others (8.5) / Sanity Tests	1m 28s
SeparateProcess (8.4) / tests	1m 58s
CacheLive (8.4) / Cache Live Tests	1m 2s
SeparateProcess (8.2) / tests	1m 52s
SeparateProcess (8.5) / tests	1m 57s
SeparateProcess (8.3) / tests	1m 49s
CacheLive (8.3) / Cache Live Tests	1m 7s
CacheLive (8.2) / Cache Live Tests	1m 22s
CacheLive (8.5) / Cache Live Tests	59s
DatabaseLive (8.3, MySQLi, 8.0) / tests	3m 11s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 37s
DatabaseLive (8.4, MySQLi, 8.0) / tests	3m 39s
DatabaseLive (8.5, OCI8, 8.0) / tests	6m 36s
DatabaseLive (8.5, MySQLi, 8.0) / tests	3m 43s
DatabaseLive (8.4, Postgre, 8.0) / tests	1m 34s
DatabaseLive (8.2, MySQLi, 8.0) / tests	5m 9s
DatabaseLive (8.2, OCI8, 8.0) / tests	5m 46s
DatabaseLive (8.2, MySQLi, 5.7) / tests	3m 16s
DatabaseLive (8.2, SQLite3, 8.0) / tests	2m 13s
DatabaseLive (8.5, Postgre, 8.0) / tests	1m 46s
DatabaseLive (8.4, SQLite3, 8.0) / tests	1m 11s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	4m 35s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	4m 46s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 12s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	5m 0s
DatabaseLive (8.3, Postgre, 8.0) / tests	1m 53s
DatabaseLive (8.3, OCI8, 8.0) / tests	5m 12s
DatabaseLive (8.3, SQLite3, 8.0) / tests	1m 8s
DatabaseLive (8.5, SQLSRV, 8.0) / tests	4m 25s
DatabaseLive (8.5, SQLite3, 8.0) / tests	59s
Upload coverage results to Coveralls	-1s
	1h 35m 7s

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