What does this implement/fix?

Fix errors happening when editing groups/clients/domains/lists not being shown. Also fix logic of the strings "enabling/disabling" as the variable "enabled" already has the new (not the current state). This was correct in groups.js, but not the others

This bug concealed another bug in FTL that can be triggered by trying to edit a domain (e.g., disabling it) via the web interface:

Branch development-v6:

despite the error being logged in FTL.log:

ON CONFLICT clause does not match any PRIMARY KEY or UNIQUE constraint in "INSERT INTO domainlist (domain,type,enabled,comment) VALUES (:item,:type,:enabled,:comment) ON CONFLICT(domain) DO UPDATE SET type = : (1)

This PR

The issue itself is fixed by pi-hole/FTL#1735

Related issue or feature (if applicable): N/A

Pull request in docs with documentation (if applicable): N/A

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