Offline mode of log scopes

[aregtech]

Description

The behavior of log scope filtering in offline mode is inconsistent with the behavior in online mode.

In online mode, the target device applies the filtering rules and only produces logs that match the active scopes and their priority masks. However, in offline mode all logs are loaded, and the Lusan application does not apply scope or priority filtering when navigating offline log data.

As a result, the scopes of offline logs should filter the logs on database level (log file level), providing messages only of the required priority, so that the message of nodes without priority or messages that are not matching the enabled priority, are not displayed at all, as if the user would filter log message on the target.

This ticket tracks all required changes to ensure that offline scope navigation behaves consistently, including applying scope priority masks and target/node filters to the available offline log messages.