Menu Key or Shift+F10 won't produce the expected contextual menu for the currently focused item/changset

[jraygauthier]

Describe the Bug

When I navigate the list of changeset using the keyboard, hitting the "Menu Key" or Shift+F10 won't produce the expected contextual menu for the item but instead an useless Cut/Copy/Paste menu.

Steps to Reproduce
Steps to reproduce the behaviour:

1. Go to the Git Graph View.
2. Click on an arbitrary item (this allow you to start to navigate with the keyboard arrows)
3. Hit "Menu Key" or Shift+F10
4. Wrong Cut/Copy/Paste menu is shown instead of the item is contextual menu.

Expected Behaviour

The proper contextual menu for the item.

Environment

• Git Graph Extension Version: v1.30.0
• Visual Studio Code Version: 1.92.0
• Operating System: Linux (NixOs 24.05)

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This would allow more productivity when using this view by completely avoiding the mouse.

See also #865 .

Potentially related to #863