fix(keycodes): correct MetaRight and ContextMenu descriptions

[ginsarix]

This PR fixes two inconsistencies in the keyboard key descriptions:

1. MetaRight missing "Right ⌘": While MetaLeft correctly includes "Left ⌘" in its description, MetaRight was missing the corresponding "Right ⌘" label.

2. ContextMenu incorrectly labeled: The ContextMenu key currently shows "Right ⌘", but this doesn't match the physical layout of Mac keyboards

These changes improve accuracy and maintain consistency across the keyboard layout descriptions.

How to test

• Run the development server
• Open the app in a browser
• Verify MetaRight now includes "Right ⌘" in its description card in the UI when pressed and in its description column in the table
• Verify ContextMenu no longer includes "Right ⌘" in its description card in the UI when pressed and in its description column in the table

Acceptance Criteria

• MetaRight description includes "Right ⌘"
• ContextMenu description does not include "Right ⌘"

Pre-merge checklist

• The PR relates to a single subject with a clear title and description in grammatically correct, complete sentences.
• Verify that feature branch is up-to-date with main (if not - rebase it).
• Double check the quality of commit messages.

Related Issues

Fixes #345