Why is it necessary to replace `zmmailboxdmgr` with `zmmailboxdmgr.unrestricted` when setting up the debugging environment?

`zmmailboxdmgr` normally enforces resource limits and process protections that can prevent the JVM from starting with custom debug options. The unrestricted version removes these restrictions, allowing the JVM to accept remote debugging connections. This step is essential for enabling the JDWP agent required for remote debugging in a Zimbra vulnerability research setup.