allow empty space key

[frogarian]

No description provided.

[gemini-code-assist]

Summary of Changes

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This pull request significantly enhances the configurability of the virtual keyboard's space bar. It introduces new properties that allow developers to control whether the space bar displays any text at all, and to explicitly choose between a language-specific description or a generic identifier. This refactoring centralizes the display logic within the SpaceKey component, simplifying its usage across various keyboard layouts and enabling more dynamic UI presentations.

Highlights

• Space Bar Customization: Introduced a new emptySpaceBar property, exposed via InputPanel, to allow the space bar to be displayed without any text, providing greater flexibility in UI design.
• Language Description Control: Added a showLanguageDescription property to the SpaceKey component, enabling explicit control over whether the space bar displays a language-specific description or a generic identifier.
• Refactored Space Key Display Logic: Centralized the logic for determining the space bar's displayed text within SpaceKey.qml, making it more configurable and reducing redundancy across layout files.
• Layout Simplification: Removed redundant btnDisplayedText assignments from numerous language-specific layout files, leveraging the new default behavior and properties of the SpaceKey component.

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[gemini-code-assist]

Code Review

This pull request introduces a feature to allow an empty space bar by adding an emptySpaceBar property. The implementation refactors SpaceKey to centralize the logic for its displayed text, which is a good improvement that simplifies many layout files. However, I've found an issue with the implementation of the empty space bar feature where it doesn't produce a visually empty key. I've left a comment with a suggested fix for this.