Use rollup queries in custom dimension reports #6448

Job	Run time
Client	1m 5s
Javascript	4m 1s
UI (0)	16m 30s
PHP (UnitTests, 7.2, Mysql, PDO_MYSQL)	2m 27s
UI (1)	18m 47s
PHP (UnitTests, 8.2, Mariadb, PDO_MYSQL)	2m 48s
UI (2)	25m 58s
PHP (UnitTests, 8.3, Mysql, MYSQLI)	3m 42s
UI (3)	20m 4s
PHP (SystemTestsPlugins, 7.2, Mysql, PDO_MYSQL)	13m 16s
PHP (SystemTestsPlugins, 8.2, Mariadb, PDO_MYSQL)	12m 14s
PHP (SystemTestsPlugins, 8.3, Mysql, MYSQLI)	16m 24s
PHP (SystemTestsCore, 7.2, Mysql, PDO_MYSQL)	7m 20s
PHP (SystemTestsCore, 8.2, Mariadb, PDO_MYSQL)	9m 30s
PHP (SystemTestsCore, 8.3, Mysql, MYSQLI)	10m 0s
PHP (IntegrationTestsCore, 7.2, Mysql, PDO_MYSQL)	13m 34s
PHP (IntegrationTestsCore, 8.2, Mariadb, PDO_MYSQL)	11m 26s
PHP (IntegrationTestsCore, 8.3, Mysql, MYSQLI)	14m 33s
PHP (IntegrationTestsPlugins, 7.2, Mysql, PDO_MYSQL)	28m 42s
PHP (IntegrationTestsPlugins, 8.2, Mariadb, PDO_MYSQL)	27m 23s
PHP (IntegrationTestsPlugins, 8.3, Mysql, MYSQLI)	34m 4s
	4h 53m 48s

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