`KeyError` when creating suggestions on "current video"

[roomrys]

Bug description

In the Labeling Suggestions dialog, when attempting to generate suggestions on the "current video" (as opposed to "all videos"), the suggestions are never returned and we see a KeyError in the terminal.

Expected behaviour

Suggestions are returned on the current video.

Actual behaviour

Suggestions are never returned and the user is left waiting with no notification of the error.

Your personal set up

• OS: windows 10

• Version(s): SLEAP v1.2.8, python 3.7

• SLEAP installation method (listed here):
  • [ ] Conda from package
  • [x] Conda from source
  • [ ] pip package
  • [ ] M1 Macs

Environment packages

# paste output of `pip freeze` or `conda list` here

Logs

Traceback (most recent call last):
  File "d:\sleap-estimates-animal-poses\other\sleap_v127\sleap\sleap\gui\app.py", line 896, in wrapped_function
    action(*args)
  File "d:\sleap-estimates-animal-poses\other\sleap_v127\sleap\sleap\gui\commands.py", line 558, in generateSuggestions
    self.execute(GenerateSuggestions, **params)
  File "d:\sleap-estimates-animal-poses\other\sleap_v127\sleap\sleap\gui\commands.py", line 240, in execute
    command().execute(context=self, params=kwargs)
  File "d:\sleap-estimates-animal-poses\other\sleap_v127\sleap\sleap\gui\commands.py", line 137, in execute
    self.do_with_signal(context, params)
  File "d:\sleap-estimates-animal-poses\other\sleap_v127\sleap\sleap\gui\commands.py", line 161, in do_with_signal
    cls.do_action(context, params)
  File "d:\sleap-estimates-animal-poses\other\sleap_v127\sleap\sleap\gui\commands.py", line 2417, in do_action
    labels=context.labels, params=params
  File "d:\sleap-estimates-animal-poses\other\sleap_v127\sleap\sleap\gui\suggestions.py", line 67, in suggest
    return method_functions[method](labels=labels, **params)
  File "d:\sleap-estimates-animal-poses\other\sleap_v127\sleap\sleap\gui\suggestions.py", line 88, in basic_sample_suggestion_method
    sugg_idx_dict[sugg.video].append(sugg.frame_idx)
KeyError: Video(backend=MediaVideo(filename='D:/data/MiniCam/220907_172146/Camera0/mov.00009.active.mp4', grayscale=True, bgr=True, dataset='', input_format=''))

Screenshots

How to reproduce

1. Go to Labeling Suggestions
2. Select target: "current video"
3. Click "Generate Suggestions"
4. See error