🎨 Palette: Add aria-labels to icon-only buttons in ChatInterface

[vireapp]

💡 What: Added aria-label attributes to the icon-only buttons in src/app/dashboard/messages/chat-interface.tsx.

🎯 Why: To improve accessibility for screen reader users by providing descriptive text for interactive elements that only use icons.

♿ Accessibility: Enhanced screen reader support for the chat interface.

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PR created automatically by Jules for task 15892523105598854786 started by @vireapp

[google-labs-jules]

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