Autoscaling size below current size and PVC size not human readable.

[GuillaumeOuint]

Sometimes, the autoscaler tries to resize a PVC with a size below current size, raising an error.

Volume infra.data-nfs-server-provisioner-1637948923-0 is 85% in-use of the 80Gi available
  BECAUSE it is above 80% used
  ALERT has been for 1306 period(s) which needs to at least 5 period(s) to scale
  AND we need to scale it immediately, it has never been scaled previously
  RESIZING disk from 86G to 20G
  Exception raised while trying to scale up PVC infra.data-nfs-server-provisioner-1637948923-0 to 20000000000 ...
(422)
Reason: Unprocessable Entity
HTTP response headers: HTTPHeaderDict({'Audit-Id': 'e69b53c3-d332-4925-b9ea-afa7570297a9', 'Cache-Control': 'no-cache, private', 'Content-Type': 'application/json', 'X-Kubernetes-Pf-Flowschema-Uid': 'b64e47c9-2a4e-48ae-83bc-355685b6c007', 'X-Kubernetes-Pf-Prioritylevel-Uid': 'e5841496-62d0-426a-a987-4b26ec143a20', 'Date': 'Sat, 22 Oct 2022 16:58:07 GMT', 'Content-Length': '520'})
HTTP response body: {"kind":"Status","apiVersion":"v1","metadata":{},"status":"Failure","message":"PersistentVolumeClaim \"data-nfs-server-provisioner-1637948923-0\" is invalid: spec.resources.requests.storage: Forbidden: field can not be less than previous value","reason":"Invalid","details":{"name":"data-nfs-server-provisioner-1637948923-0","kind":"PersistentVolumeClaim","causes":[{"reason":"FieldValueForbidden","message":"Forbidden: field can not be less than previous value","field":"spec.resources.requests.storage"}]},"code":422}


FAILED requesting to scale up `infra.data-nfs-server-provisioner-1637948923-0` by `10%` from `86G` to `20G`, it was using more than `80%` disk space over the last `78360 seconds`

I'm using the helm chart version 1.0.3 (same image tag)

Another issue, the autoscaler was able to resize another PVC from 13Gi to 14173392076, this is not human readable as before. It's not a serious issue but it's still disturbing. The autoscaler also sent the alert to slack twice for this PVC with several hours interval.