refactor: compare `$db->connID` to `false` (#9891) #14106

Job	Run time
Setup PHP Version for Code Coverage	4s
Others (8.3) / Sanity Tests	2m 33s
Others (8.4) / Sanity Tests	2m 32s
Others (8.2) / Sanity Tests	3m 59s
Others (8.5) / Sanity Tests	2m 29s
SeparateProcess (8.3) / tests	3m 38s
SeparateProcess (8.2) / tests	3m 43s
SeparateProcess (8.4) / tests	3m 20s
CacheLive (8.5) / Cache Live Tests	2m 7s
SeparateProcess (8.5) / tests	3m 34s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 57s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 49s
CacheLive (8.2) / Cache Live Tests	2m 36s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	5m 30s
CacheLive (8.4) / Cache Live Tests	2m 14s
DatabaseLive (8.4, MySQLi, 8.0) / tests	4m 28s
DatabaseLive (8.5, SQLSRV, 8.0) / tests	5m 18s
DatabaseLive (8.4, SQLite3, 8.0) / tests	2m 15s
CacheLive (8.3) / Cache Live Tests	2m 17s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	6m 19s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	5m 22s
DatabaseLive (8.5, OCI8, 8.0) / tests	6m 59s
DatabaseLive (8.2, MySQLi, 8.0) / tests	5m 2s
DatabaseLive (8.2, MySQLi, 5.7) / tests	3m 46s
DatabaseLive (8.5, MySQLi, 8.0) / tests	4m 43s
DatabaseLive (8.5, SQLite3, 8.0) / tests	2m 34s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 22s
DatabaseLive (8.3, MySQLi, 8.0) / tests	5m 50s
DatabaseLive (8.4, Postgre, 8.0) / tests	2m 51s
DatabaseLive (8.2, SQLite3, 8.0) / tests	3m 23s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 26s
DatabaseLive (8.3, Postgre, 8.0) / tests	3m 9s
DatabaseLive (8.2, OCI8, 8.0) / tests	7m 20s
DatabaseLive (8.5, Postgre, 8.0) / tests	2m 59s
Upload coverage results to Coveralls / coveralls	50s
	2h 13m 18s

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