refactor: add `system/util_bootstrap.php` to curb overreliance to `system/Test/bootstrap.php` #13245

Job	Run time
Setup PHP Version for Code Coverage	3s
Others (8.2) / Sanity Tests	3m 32s
Others (8.1) / Sanity Tests	2m 18s
Others (8.3) / Sanity Tests	2m 20s
Others (8.4) / Sanity Tests	2m 22s
SeparateProcess (8.1) / tests	3m 16s
SeparateProcess (8.3) / tests	3m 30s
SeparateProcess (8.2) / tests	3m 24s
DatabaseLive (8.1, OCI8, 8.0) / tests	6m 22s
SeparateProcess (8.4) / tests	3m 16s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	5m 40s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	5m 34s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 12s
DatabaseLive (8.3, SQLite3, 8.0) / tests	3m 22s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 17s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 32s
DatabaseLive (8.1, Postgre, 8.0) / tests	3m 17s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	4m 56s
DatabaseLive (8.1, MySQLi, 5.7) / tests	3m 29s
DatabaseLive (8.1, SQLite3, 8.0) / tests	3m 16s
DatabaseLive (8.2, MySQLi, 8.0) / tests	5m 6s
DatabaseLive (8.2, OCI8, 8.0) / tests	6m 50s
DatabaseLive (8.4, MySQLi, 8.0) / tests	4m 17s
DatabaseLive (8.4, SQLite3, 8.0) / tests	3m 18s
DatabaseLive (8.4, Postgre, 8.0) / tests	2m 29s
DatabaseLive (8.1, MySQLi, 8.0) / tests	5m 4s
DatabaseLive (8.2, SQLite3, 8.0) / tests	3m 24s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	4m 41s
DatabaseLive (8.3, MySQLi, 8.0) / tests	4m 0s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 34s
CacheLive (8.3) / Cache Live Tests	2m 3s
CacheLive (8.1) / Cache Live Tests	2m 10s
CacheLive (8.4) / Cache Live Tests	1m 58s
CacheLive (8.2) / Cache Live Tests	2m 20s
Upload coverage results to Coveralls / coveralls	45s
	2h 6m 57s

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