🎨 Palette: [UX improvement] Add ARIA states to navigation toggles

[secrooq]

💡 What: Added aria-expanded and explicit aria-label attributes to the mobile navigation toggle, user profile dropdowns, and the floating support widget.

🎯 Why: When visually impaired users navigate custom interactive components like mobile menus or dropdowns, they rely on ARIA attributes to understand the current state (opened or closed) of the control. Without these attributes, screen readers only announce a generic "button" without providing context on whether activating it will reveal or hide content.

📸 Before/After:

• Before: Dropdown and floating toggles lacked semantic meaning beyond basic focusability.
• After: Users are now informed if a menu is currently expanded or collapsed.

♿ Accessibility:

• Added aria-expanded reflecting the internal React state for the mobile menu, profile console, support terminal, and desktop user profile dropdown.
• Added aria-labels and aria-haspopups where appropriate to further describe control behavior.

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PR created automatically by Jules for task 2358616136197775183 started by @secrooq

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