Datasets list: "Partial data" and "Partially failed" replace "Degraded"

The Status column on the Datasets list no longer uses "Degraded". When a dataset's last sync had no errors but some accounts returned no data, it now shows "Partial data" in blue with an information icon. When failed accounts are mixed with accounts that synced or returned no data, it shows "Partially failed" in amber with a warning triangle. Hover a status to see how many accounts synced, returned no data, or failed. The status filter and grouping by status use the new labels.