🎨 Palette: Accessibility improvements for responsive icon-only buttons

[endlessblink]

🎨 Palette: Ensure Accessibility for Responsively Hidden Text

💡 What:
Added dynamic :title, :aria-label, :aria-expanded, and :aria-pressed attributes to icon-only buttons in the ViewControls header and SettingsModal tabs.

🎯 Why:
Buttons that transition to "icon-only" on mobile screens by hiding their inner text via display: none also unintentionally hide their label from screen readers. By adding explicit ARIA attributes directly to the parent button, we ensure all users retain context regardless of viewport size.

♿ Accessibility:

• Restored missing labels for Settings tabs on mobile devices.
• Improved semantic structure of toggle buttons in the task view controls using aria-pressed and aria-expanded to clearly indicate current state.

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PR created automatically by Jules for task 4085254086998316275 started by @endlessblink

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