Missing Alt+Backspace support in Dialog Select

[LeonMueller-OneAndOnly]

The Dialog Select component currently lacks support for Alt+Backspace (Option+Backspace on macOS) to delete whole words. This is inconsistent with other inputs and standard system behavior.

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Alt+Backspace to delete word does not work #6314: Alt+Backspace to delete word does not work
• Text editing shortcuts (Option+Arrow, Option+Backspace) don't work in search dialogs #7398: Text editing shortcuts (Option+Arrow, Option+Backspace) don't work in search dialogs

Feel free to ignore if none of these address your specific case.

For keybind-related issues, please also check our pinned keybinds documentation: #4997

[github-actions]

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