Item value containing HTML entities are not properly escaped.
For example pages: Monitoring -> Latest data (list and single item values list), Monitoring -> Overview (item values list).

Steps to reproduce:

1. Create trapper item with value type log, char or text.
2. Send &quot=test as value
3. Open latest data

Result:
Observed "=test as item last value
Expected:
&quot=test as item last value

Was moved from ZBXNEXT-4359