🎨 Palette: Clear Rating UX Improvement & Localization Fix

[Gamepulse]

This PR implements a micro-UX improvement for the game detail view and fixes a localization typo.

💡 What:

1. Clear Rating Button: Added a small ✕ button next to the personal rating value. This allows users to reset their rating to null, which was previously impossible once a rating was set because the range slider always has a value.
2. Localization Fix: Corrected the English translation key for platforms, which was incorrectly set to the French word "Plateformes".
3. Build Fix: Removed an unused state variable (hasIgdbId) in GameScreenshotsCarousel.tsx that was causing pnpm build to fail.

🎯 Why:

• Native range inputs don't support a null state, leading to a poor user experience when someone wants to remove a rating.
• Inconsistent localization (French in the English translation) reduces the professional feel of the app.
• Fixing build errors ensures continuous integration remains green.

♿ Accessibility:

• The new "Clear" button uses aria-label and title for screen readers and tooltips.
• The ✕ icon is wrapped in <span aria-hidden="true"> to prevent screen readers from reading the literal character incorrectly.
• Focus visible rings are applied to the new interactive element.

📸 Before/After:

[Verification screenshots and videos have been generated and reviewed during the verification step.]

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PR created automatically by Jules for task 11079253541627504770 started by @Gamepulse

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