[stable31] feat(theming): allow to disable standalone windows #17847

Job	Run time
changes	9s
integration-sqlite (capabilities_features, 8.1, stable31)	1m 52s
integration-sqlite (collaboration_features, 8.1, stable31)	3m 37s
integration-sqlite (comments_features, 8.1, stable31)	3m 54s
integration-sqlite (dav_features, 8.1, stable31)	10m 57s
integration-sqlite (features, 8.1, stable31)	9m 34s
integration-sqlite (federation_features, 8.1, stable31)	5m 35s
integration-sqlite (--tags ~@large files_features, 8.1, stable31)	12m 45s
integration-sqlite (filesdrop_features, 8.1, stable31)	2m 50s
integration-sqlite (file_conversions, 8.1, stable31)	2m 50s
integration-sqlite (openldap_features, 8.1, stable31)	3m 6s
integration-sqlite (openldap_numerical_features, 8.1, stable31)	2m 9s
integration-sqlite (ldap_features, 8.1, stable31)	2m 32s
integration-sqlite (remoteapi_features, 8.1, stable31)	53s
integration-sqlite (setup_features, 8.1, stable31)	1m 49s
integration-sqlite (sharees_features, 8.1, stable31)	4m 45s
integration-sqlite (sharing_features, 8.1, stable31)	23m 48s
integration-sqlite (videoverification_features, 8.1, stable31)	4m 58s
integration-sqlite-summary	4s
	1h 38m 7s

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