Fix detecting backup directory with recent snapper

[almson]

Backup directory of an already-backed-up configuration is not being parsed and detected. I am using Manjaro Linux. Snapper is version 0.12.1. Output of sudo snapper -c home list -t single is:

  # │ Date                             │ User │ Description               │ Userdata
────┼──────────────────────────────────┼──────┼───────────────────────────┼────────────────────────────────────────────────────────────────────────────
  0 │                                  │ root │ current                   │
  2 │ Sun 05 Jan 2025 11:00:22 PM WITA │ root │ timeline                  │
655 │ Tue 18 Mar 2025 10:24:46 AM WITA │ root │ latest incremental backup │ backupdir=asdf, subvolid=5, uuid=000000-0000-0000-0000-000000000000