feat: validate query conditions (#10595)

Query conditions can take in arbitrary values, this can cause SQL
errors. This PR fixes it

config/locales/en.yml

@@ -80,6 +80,7 @@ en:
       number_of_records: Limit reached. The maximum number of allowed custom filters for a user per account is 50.
       invalid_attribute: Invalid attribute key - [%{key}]. The key should be one of [%{allowed_keys}] or a custom attribute defined in the account.
       invalid_operator: Invalid operator. The allowed operators for %{attribute_name} are [%{allowed_keys}].
+      invalid_query_operator: Query operator must be either "AND" or "OR".
       invalid_value: Invalid value. The values provided for %{attribute_name} are invalid
   reports:
     period: Reporting period %{since} to %{until}