Fix Select Visualization menu name in macOS executable

[JMCanning78]

When the bundle of visualizations is exported as a macOS executable, the "Select Visualization" menu label does not appear initially.

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Once the user selects a visualization app, the menu label shows the next time the menu is raised. It is desirable, however, to have it show before the first selection so they are aware of the menu.

[JMCanning78]

After installing Python 3.9.13 on a Mac with an M1 (Apple silicon) chip using homebrew, this problem disappeared. In other words, the menu title shows up when the application loads.

Specific steps for the installation:

$ brew install python@3.9
$ brew install python-tk@3.9   # Needed to get tkinter
$ pip3 install -r datastructures-visualization/requirements.txt

Then I ran the program as $ python3 runAllVisualizationsMenu.py