RaspiBlitz v1.12.0 rc3: electrs reports as not installed and not configured

[cstenglein]

The app_state_update_message reports the following:

// other apps ...
      {
        "id": "electrs",
        "version": "v0.10.6",
        "installed": true,
        "configured": true,
        "status": "online",
        "local_ip": "<ip>",
        "http_port": null,
        "https_port": null,
        "https_forced": false,
        "https_self_signed": false,
        "hidden_service": null,
        "address": "http://<ip>:None",
        "auth_method": "none",
        "details": null,
        "error": null
      },

But when going to the app page, which calls /api/apps/status_advanced/electrs:

{
    "id": "electrs",
    "version": "v0.10.6",
    "installed": false,
    "configured": false,
    "status": "offline",
    "local_ip": "<ip>",
    "http_port": "50001",
    "https_port": "50002",
    "https_forced": null,
    "https_self_signed": null,
    "hidden_service": "<tor>.onion",
    "address": "<ip>",
    "auth_method": null,
    "details": {
        "initial_sync_done": true,
        "block_height": "0",
        "blockheightPercent": "0",
        "info_sync": "",
        "electrum_responding": "1"
    },
    "error": null
}

Thus the webUI displays the wrong message.