Retry token refresh for Azure SPN in case of `Temporarily throttled, too many requests`

[nfx]

Symptom: inner token: token error: {"error":"invalid_request","error_description":"Temporarily throttled, too many requests"}

Follow-up to databricks/terraform-provider-databricks#2042 (comment)

cc @vmazobhc

[tanmay-db]

technically, this is the same as #256 - we need retries