ACL viewer issue in AEM

[stoerr]

Two problems:

1. if you set the Nodes Browser tree to unfiltered and go into a rep:policy tree and have the acl viewer open, you get the error e.g. "Error on loading policies - 400 Tree /conf/rep:policy/allow5/rep:restrictions defines access control content."
2. the ACL viewer does not handle properties with multiple values. E.g. in AEM at /conf/global we get errors like "rep:subtrees:javax.jcr.ValueFormatException: Attempt to retrieve single value from multivalued property"

[stoerr]

1. can be seen as the right thing, so I'll leave it at that. I'm fixing 2., though.

[stoerr]

After the fix, we get now e.g. in http://localhost:4502/bin/cpm/nodes/security.accessPolicies.effective.json/conf

  {
    "principal": "everyone",
    "path": "/conf",
    "allow": true,
    "privileges": [
      "jcr:read"
    ],
    "restrictions": [
      "rep:subtrees=/global/site-templates/",
      "rep:subtrees=/settings/wcm/",
      "rep:subtrees=/sling:configs/",
      "rep:subtrees=/settings/dam/cfm/models/",
      "rep:subtrees=/settings/graphql/persistentQueries"
    ]
  },

That is not 100% satisfactory, but since this is a rare case that never surfaced, I think it's OK. How to make a nicer display in policiesTab.js out if this is not quite obvious - it now shows

rep:subtrees=/global/site-templates/,rep:subtrees=/settings/wcm/,rep:subtrees=/sling:configs/,rep:subtrees=/settings/dam/cfm/models/,rep:subtrees=/settings/graphql/persistentQueries

but again, it's interpretable and a rare case, and certainly an improvement. 😄