[stable31] fix(core): Stop abusing the cache for avatar upload #31253

Job	Run time
changes	10s
integration-sqlite (--tags ~@large files_features, 8.1, stable31, stable31)	14m 47s
integration-sqlite (capabilities_features, 8.1, stable31, stable31)	1m 2s
integration-sqlite (file_conversions, 8.1, stable31, stable31)	2m 51s
integration-sqlite (comments_features, 8.1, stable31, stable31)	3m 6s
integration-sqlite (features, 8.1, stable31, stable31)	10m 36s
integration-sqlite (openldap_numerical_features, 8.1, stable31, stable31)	2m 20s
integration-sqlite (dav_features, 8.1, stable31, stable31)	9m 26s
integration-sqlite (setup_features, 8.1, stable31, stable31)	1m 21s
integration-sqlite (ldap_features, 8.1, stable31, stable31)	2m 4s
integration-sqlite (sharees_features, 8.1, stable31, stable31)	2m 47s
integration-sqlite (openldap_features, 8.1, stable31, stable31)	2m 14s
integration-sqlite (filesdrop_features, 8.1, stable31, stable31)	2m 47s
integration-sqlite (sharing_features, 8.1, stable31, stable31)	15m 41s
integration-sqlite (federation_features, 8.1, stable31, stable31)	3m 0s
integration-sqlite (remoteapi_features, 8.1, stable31, stable31)	2m 2s
integration-sqlite (theming_features, 8.1, stable31, stable31)	2m 18s
integration-sqlite (collaboration_features, 8.1, stable31, stable31)	4m 6s
integration-sqlite (videoverification_features, 8.1, stable31, stable31)	6m 20s
integration-sqlite-summary	6s
	1h 29m 4s

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