Fix token not persisting when limits is missing

[dloucasfx]

This bug has been around for years but it's only exposed when entitlement is missing the tokenLimits feature.
The json response for token creation against an org with no tokenLimits will look like this (note: "limits" : {... is missing )

{
  "authScopes" : [ "INGEST", "API" ],
  "created" : 1662988122213,
  "description" : "test",
  "disabled" : false,
  "expiry" : 1662988122213,
  "id" : "xxxxxx",
  "lastUpdated" : 1662988122213,
  "lastUpdatedBy" : null,
  "latestRotation" : 1662988122213,
  "name" : "test",
  "permissions" : null,
  "secret" : "xxxxxx"
}

With limits missing, the provider will skip persisting the token and notifications

Fixes: #310

Signed-off-by: Dani Louca [email protected]