Avoid python error for depending plugin not found

[domi4484]

Avoid showing the following error when a dependent plugin was not found. Can be tested trying installing the experimental Model Baker plugin now (version v7.1.0)

Fehler bei der Ausführung folgenden Codes:
pyplugin_installer.instance().installPlugin('QgisModelBaker', stable=False)


Traceback (most recent call last):
  File "", line 1, in 
  File "/usr/share/qgis/python/pyplugin_installer/installer.py", line 333, in installPlugin
    self.processDependencies(plugin["id"])
  File "/usr/share/qgis/python/pyplugin_installer/installer.py", line 682, in processDependencies
    dlg = QgsPluginDependenciesDialog(plugin_id, to_install, to_upgrade, not_found)
  File "/usr/share/qgis/python/pyplugin_installer/qgsplugindependenciesdialog.py", line 92, in __init__
    _make_row(data, i, name)
  File "/usr/share/qgis/python/pyplugin_installer/qgsplugindependenciesdialog.py", line 63, in _make_row
    widget.use_stable_version = data['use_stable_version']
KeyError: 'use_stable_version'

[signedav]

Thanks.