refactor: add `system/util_bootstrap.php` to curb overreliance to `system/Test/bootstrap.php` #13257

Job	Run time
Setup PHP Version for Code Coverage	2s
Others (8.4) / Sanity Tests	2m 22s
Others (8.2) / Sanity Tests	3m 42s
Others (8.1) / Sanity Tests	2m 31s
Others (8.3) / Sanity Tests	2m 36s
CacheLive (8.4) / Cache Live Tests	1m 54s
CacheLive (8.2) / Cache Live Tests	2m 5s
CacheLive (8.1) / Cache Live Tests	1m 55s
SeparateProcess (8.1) / tests	3m 22s
SeparateProcess (8.2) / tests	3m 20s
SeparateProcess (8.3) / tests	3m 40s
SeparateProcess (8.4) / tests	3m 15s
DatabaseLive (8.2, OCI8, 8.0) / tests	6m 50s
DatabaseLive (8.2, MySQLi, 8.0) / tests	6m 8s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	5m 23s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	4m 38s
CacheLive (8.3) / Cache Live Tests	2m 5s
DatabaseLive (8.2, Postgre, 8.0) / tests	2m 57s
DatabaseLive (8.1, SQLite3, 8.0) / tests	2m 43s
DatabaseLive (8.1, OCI8, 8.0) / tests	6m 19s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 18s
DatabaseLive (8.4, Postgre, 8.0) / tests	2m 33s
DatabaseLive (8.1, Postgre, 8.0) / tests	2m 27s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	5m 13s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 20s
DatabaseLive (8.3, MySQLi, 8.0) / tests	5m 14s
DatabaseLive (8.2, SQLite3, 8.0) / tests	2m 56s
DatabaseLive (8.4, MySQLi, 8.0) / tests	4m 47s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 8s
DatabaseLive (8.4, SQLite3, 8.0) / tests	2m 50s
DatabaseLive (8.1, MySQLi, 8.0) / tests	5m 59s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	4m 54s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 56s
DatabaseLive (8.1, MySQLi, 5.7) / tests	3m 15s
Upload coverage results to Coveralls / coveralls	37s
	2h 6m 14s

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