fix(longhorn): Invert hotfix condition to handle absent pod

Currently when the share-pod simply doesn't exist the hotfix doesn'T
trigger correctly and therefore never patches the error state.

Instead it errors out with the following message:
```
Error from server (NotFound): pods "share-manager-pvc-36c42839-3899-41fe-bfe3-a6308982d671" not found
```

infrastructure/longhorn/hotfix-7183.yaml

@@ -24,7 +24,7 @@ spec:
               - -c
               - |
                 for i in $(kubectl get lhsm -n longhorn-system --no-headers -o custom-columns=NAME:metadata.name); do 
-                  if kubectl get pods --no-headers -n longhorn-system "share-manager-$i" | grep -v Running; then 
+                  if ! kubectl get pods --no-headers -n longhorn-system "share-manager-$i" | grep Running; then
                     kubectl patch lhsm -n longhorn-system --type=merge --subresource status --patch 'status: {state: error}' $i
                   fi
                 done