refactor: add return type to closuer in FilterCheck #12287

Job	Run time
Setup PHP Version for Code Coverage	1s
Others (8.2) / Sanity Tests	3m 54s
Others (8.3) / Sanity Tests	2m 30s
Others (8.1) / Sanity Tests	2m 31s
Others (8.4, --ignore-platform-req=php) / Sanity Tests	2m 16s
CacheLive (8.1) / Cache Live Tests	1m 55s
CacheLive (8.2) / Cache Live Tests	2m 7s
CacheLive (8.4, --ignore-platform-req=php) / Cache Live Tests	1m 47s
CacheLive (8.3) / Cache Live Tests	1m 55s
DatabaseLive (8.1, MySQLi, 5.7) / tests	3m 1s
DatabaseLive (8.1, MySQLi, 8.0) / tests	4m 6s
DatabaseLive (8.1, OCI8, 8.0) / tests	5m 51s
DatabaseLive (8.1, Postgre, 8.0) / tests	2m 36s
DatabaseLive (8.1, SQLite3, 8.0) / tests	2m 25s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	3m 45s
DatabaseLive (8.2, MySQLi, 8.0) / tests	4m 56s
DatabaseLive (8.2, OCI8, 8.0) / tests	7m 7s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 16s
DatabaseLive (8.2, SQLite3, 8.0) / tests	2m 52s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	4m 55s
DatabaseLive (8.3, MySQLi, 8.0) / tests	3m 35s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 3s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 43s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 28s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	3m 50s
DatabaseLive (8.4, --ignore-platform-req=php) / tests	1m 57s
SeparateProcess (8.1) / tests	3m 27s
SeparateProcess (8.2) / tests	3m 16s
SeparateProcess (8.3) / tests	3m 4s
SeparateProcess (8.4, --ignore-platform-req=php) / tests	3m 3s
Upload coverage results to Coveralls / coveralls	35s
	1h 37m 47s

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