Initial quote perf tuning by increasing the distribution percent from…

… 5% to 10% for the mainnet (#285)

* 5% -> 10% for mainnet distribution percent

* 5% -> 10% for all default chains (including eth mainnet)

lib/handlers/shared.ts

@@ -91,7 +91,7 @@ export const DEFAULT_ROUTING_CONFIG_BY_CHAIN = (chainId: ChainId): AlphaRouterCo
         maxSwapsPerPath: 3,
         minSplits: 1,
         maxSplits: 7,
-        distributionPercent: 5,
+        distributionPercent: 10,
         forceCrossProtocol: false,
       }
   }