Support for Temporarily Disabling Key Mappings and Reusing Keys Across Multiple Configurations

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### Description of the new feature / enhancement

Please add a feature that allows users to temporarily disable a specific key mapping. This would enable users to reuse the same key for a different mapping without losing the original configuration.

By doing so, users can preserve the logic of their previous mappings and easily switch between them, instead of having to delete and recreate mappings each time.

### Scenario when this would be used?

1) Suppose I remap the Print Screen key to Alt + Print Screen. This would allow me to capture only the currently active window (i.e., the main screen without the taskbar).

2) Additionally, I want the option to remap the Print Screen key to Windows + Print Screen, which captures the entire screen, including the taskbar.

This is one example of how such a remapping workflow could be useful.

### Supporting information

_No response_

No files, tests, or entry points are named. Start by locating the Keyboard Manager implementation and its key-mapping configuration, then determine how temporarily disabling one mapping and reusing its key across configurations should be represented and switched; done means both example Print Screen mappings can be preserved and selected without recreating them.

Written by the indexing model from the issue text.