refactor: simplify and optimize handleRequest method in CodeIgniter #15829

Job	Run time
Setup PHP Version for Code Coverage	4s
Others (8.5) / Sanity Tests	1m 17s
Others (8.4) / Sanity Tests	1m 22s
Others (8.3) / Sanity Tests	1m 16s
Others (8.2) / Sanity Tests	2m 44s
SeparateProcess (8.3) / tests	42s
SeparateProcess (8.2) / tests	2m 32s
SeparateProcess (8.5) / tests	2m 10s
CacheLive (8.2) / Cache Live Tests	1m 9s
SeparateProcess (8.4) / tests	1m 13s
CacheLive (8.5) / Cache Live Tests	1m 6s
DatabaseLive (8.4, OCI8, 8.0) / tests	2m 26s
DatabaseLive (8.4, Postgre, 8.0) / tests	55s
CacheLive (8.4) / Cache Live Tests	38s
DatabaseLive (8.2, Postgre, 8.0) / tests	42s
DatabaseLive (8.3, SQLite3, 8.0) / tests	1m 0s
DatabaseLive (8.5, SQLSRV, 8.0) / tests	2m 30s
DatabaseLive (8.3, OCI8, 8.0) / tests	2m 32s
DatabaseLive (8.2, OCI8, 8.0) / tests	1m 40s
DatabaseLive (8.5, SQLite3, 8.0) / tests	1m 13s
DatabaseLive (8.5, MySQLi, 8.0) / tests	1m 27s
CacheLive (8.3) / Cache Live Tests	2m 32s
DatabaseLive (8.5, Postgre, 8.0) / tests	17s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	2m 32s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	2m 33s
DatabaseLive (8.2, MySQLi, 5.7) / tests	2m 33s
DatabaseLive (8.2, MySQLi, 8.0) / tests	2m 32s
DatabaseLive (8.4, SQLite3, 8.0) / tests	2m 33s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	2m 32s
DatabaseLive (8.5, OCI8, 8.0) / tests	2m 33s
DatabaseLive (8.3, MySQLi, 8.0) / tests	2m 32s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 32s
DatabaseLive (8.2, SQLite3, 8.0) / tests	2m 32s
DatabaseLive (8.4, MySQLi, 8.0) / tests	2m 32s
Upload coverage results to Coveralls	-1s
	1h 1m 22s

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