🎨 Palette: Improve ImageUploader accessibility and keyboard navigation

[MacTechIN]

💡 What: Improved accessibility and keyboard navigation in the ImageUploader component. Added clear focus rings to interactive elements, replaced tooltip attributes with semantic ARIA labels, and hid decorative SVG icons from screen readers.

🎯 Why: Users navigating via keyboard need clear visual indicators of which element is focused. Screen reader users rely on semantic descriptions rather than visual tooltips, and redundant information (like reading an icon after its label) should be avoided.

📸 Before/After: Focus rings are now clearly visible on the "Select File" and "Remove image" buttons.

♿ Accessibility:

• Added focus-visible:ring-2 focus-visible:ring-offset-2 focus-visible:outline-none to buttons.
• Replaced the title attribute with aria-label on the icon-only "Remove image" button.
• Added aria-hidden="true" to the X icon inside the "Remove image" button.

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PR created automatically by Jules for task 12000132981347354190 started by @MacTechIN

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[gemini-code-assist]

Code Review

This pull request improves the accessibility and keyboard navigation of the ImageUploader component by adding focus-visible rings, replacing the title attribute with aria-label on the remove button, and hiding the icon from screen readers. The reviewer recommends explicitly setting type="button" on both buttons to prevent accidental form submissions, and retaining the title attribute alongside aria-label on the remove button to preserve the visual tooltip for sighted users.

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[gemini-code-assist]

By default, <button> elements inside a <form> behave as submit buttons. To prevent accidental form submissions when this component is used inside a form, it is recommended to explicitly set type="button".

            className="px-3 sm:px-4 py-2 text-sm bg-blue-500 text-white rounded-lg hover:bg-blue-600 active:scale-95 transition-all focus-visible:ring-2 focus-visible:ring-offset-2 focus-visible:ring-blue-500 focus-visible:outline-none"
            type="button"

[gemini-code-assist]

Replacing the title attribute entirely with aria-label removes the visual tooltip for sighted mouse and keyboard users. For icon-only buttons, keeping both title (for visual tooltips) and aria-label (for screen readers) provides the best user experience. Additionally, explicitly setting type="button" prevents accidental form submissions.

            type="button"
            className="absolute top-2 right-2 p-1.5 sm:p-2 bg-red-500 text-white rounded-full hover:bg-red-600 active:scale-95 transition-all shadow-lg focus-visible:ring-2 focus-visible:ring-offset-2 focus-visible:ring-red-500 focus-visible:outline-none"
            title={t('removeImage')}
            aria-label={t('removeImage')}