docs: Note of hidden properties #13720

Job	Run time
Setup PHP Version for Code Coverage	2s
Others (8.4) / Sanity Tests	3m 0s
Others (8.1) / Sanity Tests	2m 44s
Others (8.3) / Sanity Tests	2m 43s
Others (8.2) / Sanity Tests	3m 51s
SeparateProcess (8.3) / tests	5m 5s
SeparateProcess (8.2) / tests	4m 25s
SeparateProcess (8.4) / tests	3m 48s
CacheLive (8.2) / Cache Live Tests	2m 50s
SeparateProcess (8.1) / tests	4m 11s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	5m 47s
CacheLive (8.4) / Cache Live Tests	2m 24s
CacheLive (8.1) / Cache Live Tests	2m 13s
CacheLive (8.3) / Cache Live Tests	2m 21s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	6m 11s
DatabaseLive (8.3, Postgre, 8.0) / tests	5m 1s
DatabaseLive (8.4, Postgre, 8.0) / tests	3m 2s
DatabaseLive (8.2, SQLite3, 8.0) / tests	3m 21s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	7m 28s
DatabaseLive (8.4, SQLite3, 8.0) / tests	3m 41s
DatabaseLive (8.4, OCI8, 8.0) / tests	7m 18s
DatabaseLive (8.2, Postgre, 8.0) / tests	4m 25s
DatabaseLive (8.1, OCI8, 8.0) / tests	6m 18s
DatabaseLive (8.1, MySQLi, 8.0) / tests	4m 52s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	5m 0s
DatabaseLive (8.2, OCI8, 8.0) / tests	7m 8s
DatabaseLive (8.1, Postgre, 8.0) / tests	2m 54s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 44s
DatabaseLive (8.4, MySQLi, 8.0) / tests	5m 23s
DatabaseLive (8.3, MySQLi, 8.0) / tests	4m 39s
DatabaseLive (8.1, SQLite3, 8.0) / tests	2m 21s
DatabaseLive (8.1, MySQLi, 5.7) / tests	3m 18s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 32s
DatabaseLive (8.2, MySQLi, 8.0) / tests	5m 4s
Upload coverage results to Coveralls / coveralls	49s
	2h 22m 53s

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