Specify Target Map Object for Change Creation via Network Intent Remediation

When a change is created through the Remediation action within a Network Intent, the system does not use a map object that the user has already created and saved; instead, it relies on a different, unsaved map for change creation. This requires the user to separately save the map used during the change process, creating an inconsistent workflow. This enhancement would allow users to specify which existing map object should be used for change creation when a Remediation action is triggered from a Network Intent. Supporting this capability would reduce redundant map-saving steps and provide consistent, predictable behavior when generating changes from automated diagnostics.