fix(SetupChecks): Validate URL before parsing #14256

Job	Run time
changes	5s
integration-sqlite (capabilities_features, 8.1, main)	1m 29s
integration-sqlite (collaboration_features, 8.1, main)	2m 26s
integration-sqlite (comments_features, 8.1, main)	1m 38s
integration-sqlite (dav_features, 8.1, main)	4m 25s
integration-sqlite (features, 8.1, main)	5m 27s
integration-sqlite (federation_features, 8.1, main)	3m 3s
integration-sqlite (--tags ~@large files_features, 8.1, main)	7m 49s
integration-sqlite (filesdrop_features, 8.1, main)	1m 29s
integration-sqlite (openldap_features, 8.1, main)	1m 24s
integration-sqlite (openldap_numerical_features, 8.1, main)	1m 47s
integration-sqlite (ldap_features, 8.1, main)	1m 51s
integration-sqlite (remoteapi_features, 8.1, main)	1m 20s
integration-sqlite (setup_features, 8.1, main)	1m 17s
integration-sqlite (sharees_features, 8.1, main)	3m 18s
integration-sqlite (sharing_features, 8.1, main)	10m 33s
integration-sqlite (videoverification_features, 8.1, main)	4m 16s
integration-sqlite-summary	4s
	53m 41s

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