🎨 Palette: Add aria-label to search input in Players page

[myarichuk]

💡 What: Added an aria-label attribute to the search input field in the Players.razor component.
🎯 Why: To improve accessibility. Input fields without a visible <label> need an aria-label so screen readers can correctly announce their purpose. Placeholder text alone is not reliably read by all assistive technologies.
♿ Accessibility: This directly enhances the experience for keyboard and screen-reader users by making the search field discoverable and comprehensible.

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PR created automatically by Jules for task 3843783597499341747 started by @myarichuk

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