fix(service-datasource,metadata-core)!: the datasource-admin plugin reads environment rows only; a legacy organization-scoped datasource row is neither restored nor served (ADR-0131 D6)

fix(service-datasource,metadata-core)!: the datasource-admin plugin reads environment rows only; a legacy organization-scoped datasource row is neither restored nor served (ADR-0131 D6) #18351