uxp uninstall fails after crossplane upgrade

[plumbis]

What happened?

After using up uxp upgrade to upgrade an existing Crossplane install to UXP, using uxp uninstall fails.

vagrant@kubecontroller-01:~$ up uxp upgrade v1.7.0-up.1 -n crossplane-system

vagrant@kubecontroller-01:~$ kubectl get pods -n crossplane-system
NAME                                       READY   STATUS    RESTARTS      AGE
crossplane-797c7cd8b6-nnmgd                1/1     Running   0             51s
crossplane-rbac-manager-744b86cbcd-9gjrz   1/1     Running   0             51s
upbound-bootstrapper-5bbdbf758b-kdrk6      1/1     Running   0             51s
xgql-666f97f4cf-4d4sp                      1/1     Running   1 (43s ago)   51s

vagrant@kubecontroller-01:~$ up uxp uninstall -n crossplane-system
up: error: uninstall: Release not loaded: universal-crossplane: release: not found

vagrant@kubecontroller-01:~$ helm list -n crossplane-system
NAME      	NAMESPACE        	REVISION	UPDATED                                	STATUS  	CHART                          	APP VERSION
crossplane	crossplane-system	2       	2022-06-07 17:35:19.286032018 +0000 UTC	deployed	universal-crossplane-1.7.0-up.1	1.7.0-up.1

How can we reproduce it?

Install Crossplane v1.7.0

kubectl create namespace crossplane-system

helm repo add crossplane-stable https://charts.crossplane.io/stable
helm repo update

helm install crossplane --namespace crossplane-system crossplane-stable/crossplane --version 1.7.0

Upgrade to UXP 1.7.0-up.1
up uxp upgrade v1.7.0-up.1 -n crossplane-system

Uninstall UXP
up uxp uninstall -n crossplane-system

What environment did it happen in?

Crossplane + Upbound v1.7.0 Up CLI v0.11.0