install/58123: Installer cannot change the partition mount point

[gmal.rom%gmail.com@localhost]

>Number:         58123
>Category:       install
>Synopsis:       Installer cannot change the partition mount point
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Apr 07 14:35:00 +0000 2024
>Originator:     Abc
>Release:        10.0
>Organization:
>Environment:
amd64
>Description:
When installing to a disk with existing BSD partitions, the partitioner from the installer shows the "previously mounted on" mount point and it cannot be changed from the interface. If it is a root partition, installation cannot continue.
>How-To-Repeat:
1. Create a root partition on a BSD-formatted disk;
2. Mount it somewhere else and unmount
3. Run the installer
4. Note that even when you change the displayed mount point to /, it remains the same.
>Fix: