Hamster Time Tracker Plugin: 'HamsterPlugin' object has no attribute 'preferences_dialog'

[Haris-Nr]

Context: Global generic exception

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/GTG/gtk/plugins.py", line 253, in on_plugin_configure
    plugin.instance.configure_dialog(self.dialog)
  File "/usr/lib/python3/dist-packages/GTG/plugins/hamster/hamster.py", line 365, in configure_dialog
    self.preferences_dialog.set_transient_for(manager_dialog)
    ^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'HamsterPlugin' object has no attribute 'preferences_dialog'

Software versions:

• Getting Things GNOME! 0.6.0
• CPython 3.11.6 (main, Oct 8 2023, 05:06:43) [GCC 13.2.0]
• GTK 3.24.38, GLib 2.78.0
• PyGLib 3.46.0, PyGObject 3.46.0
• Linux-6.5.0-13-generic-x86_64-with-glibc2.38

[Haris-Nr]

check

[nekohayo]

Needs to be retested with the git master version.

Related: #996