Close idle admincentral sessions by default to free memory

Expected results

Closing idle sessions helps manage server resources and ensures session data security by terminating inactive sessions.

Actual results

Idle sessions will not be automatically closed. The user sessions will remain open until they are explicitly closed or until the server is restarted.

Workaround

Set Set closeIdleSession=true in https://git.magnolia-cms.com/projects/PLATFORM/repos/ce/browse/magnolia-empty-webapp/src/main/webapp/WEB-INF/web.xml#45

Development notes

Make sure the setting in empty webapp is either inherited or duplicated in other webapps (including test webapps) such as DX core webapp.