widget selection is using the wrong type

[christianrauch]

The selection of the matching widget per parameter type in

rqt_reconfigure/src/rqt_reconfigure/param_client_widget.py

Lines 222 to 231 in 1847d22

	def add_editor_widgets(self, parameters, descriptors):
	for parameter, descriptor in zip(parameters, descriptors):
	if parameter.type_ not in EDITOR_TYPES:
	continue
	logging.debug('Adding editor widget for {}'.format(parameter.name))
	editor_widget = EDITOR_TYPES[parameter.type_](
	self._param_client, parameter, descriptor
	)
	self._editor_widgets[parameter.name] = editor_widget
	editor_widget.display(self.grid)

is using the type of the default parameter instead of the type from the parameter description. This means that typed parameters without a default value do not get a configuration widget.

As en example, the new array configuration from #108 will not work with parameters where ros2 param describe returns

  Type: double array

[christianrauch]

Fixed via #124.