feat: map aPlaUSDT0 Merkl reward to USDT0 parent icon (#3081)

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: sammdec

src/components/incentives/IncentivesTooltipContent.tsx

@@ -183,6 +183,11 @@ const IncentivesSymbolMap: {
     symbol: 'aUSDe',
     aToken: true,
   },
+  aPlaUSDT0: {
+    tokenIconSymbol: 'usdt0',
+    symbol: 'aUSDT0',
+    aToken: true,
+  },
   tydroInkPoints: {
     tokenIconSymbol: 'TydroInkPoints',
     symbol: 'TydroInkPoints',