test: fix `missingType.return` errors #13198

Job	Run time
Setup PHP Version for Code Coverage	2s
Others (8.1) / Sanity Tests	2m 45s
Others (8.2) / Sanity Tests	3m 36s
Others (8.4) / Sanity Tests	2m 28s
Others (8.3) / Sanity Tests	2m 27s
SeparateProcess (8.1) / tests	3m 26s
CacheLive (8.1) / Cache Live Tests	2m 7s
SeparateProcess (8.3) / tests	3m 19s
CacheLive (8.2) / Cache Live Tests	2m 7s
SeparateProcess (8.4) / tests	3m 6s
SeparateProcess (8.2) / tests	3m 30s
CacheLive (8.3) / Cache Live Tests	2m 4s
DatabaseLive (8.1, OCI8, 8.0) / tests	6m 27s
CacheLive (8.4) / Cache Live Tests	2m 10s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 39s
DatabaseLive (8.1, MySQLi, 5.7) / tests	3m 20s
DatabaseLive (8.2, OCI8, 8.0) / tests	7m 13s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	5m 23s
DatabaseLive (8.1, Postgre, 8.0) / tests	2m 57s
DatabaseLive (8.3, MySQLi, 8.0) / tests	4m 47s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	4m 55s
DatabaseLive (8.4, SQLite3, 8.0) / tests	2m 41s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 14s
DatabaseLive (8.4, MySQLi, 8.0) / tests	6m 9s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	4m 51s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 37s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 43s
DatabaseLive (8.1, MySQLi, 8.0) / tests	4m 39s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 21s
DatabaseLive (8.1, SQLite3, 8.0) / tests	2m 33s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	5m 3s
DatabaseLive (8.4, Postgre, 8.0) / tests	2m 40s
DatabaseLive (8.2, SQLite3, 8.0) / tests	3m 10s
DatabaseLive (8.2, MySQLi, 8.0) / tests	5m 47s
Upload coverage results to Coveralls / coveralls	43s
	2h 7m 59s

Provide feedback