We are not properly handling our subscriptions when checking wether an app is enabled or not.

We first map the subsicriptions and we add a new attribute called `installedCSV` here and then we try to filter all the subscriptions to check an app's enablement here.

The main issue is that if the subscription does not contain `sub.status?.installedCSV` and we assume that the type of installedCSV is a string, so `.startsWith(app.spec.csvName))` will fail due to an undefined value.

We should handle that error.