Add RTL support to delete-confirmation-prompt in scratch-gui

[pishi-ai]

This commit adds RTL (Right-to-Left) language support to the delete-confirmation-prompt component in scratch-gui.

Resolves

In RTL languages, when multiple sprites are opened, the confirmation prompt extends beyond the window boundary. This PR fixes that issue by properly handling RTL layout.

Proposed Changes

• Updated layout and styles to support RTL rendering for the delete-confirmation-prompt
• Adjusted alignment logic and directional styling
• Ensured icon and button positioning respects RTL direction
• Modified 6 existing files
• Added 1 new file

Reason for Changes

RTL language support is essential for accessibility and internationalization. Without proper handling, the confirmation prompt becomes unusable in RTL contexts. This update ensures consistent behavior and layout across both LTR and RTL languages.

Test Coverage

• Manually tested the delete-confirmation-prompt in RTL and LTR languages
• Verified the prompt displays fully within the window and aligns correctly
• Confirmed no regression in LTR behavior

[github-actions]

All contributors have signed the CLA ✍️ ✅
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[pishi-ai]

I have read the CLA Document and I hereby sign the CLA

[cwillisf]

@pishi-ai, thanks for your help! I really appreciate the testing notes, too.

[cwillisf]

@KManolov3, do you have time to review this? If not, let me know.
I took a quick look: it seems generally reasonable, but you're the expert here :)