fix(sushi): use parameterized GraphQL variables in findToken

Build the find-token request with a parameterized GraphQL query and variables instead of interpolating args.search into the query string. This treats the input as data rather than query syntax and removes the manual JSON escaping. No change to the returned result shape.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: jayantkamble10000

typescript/agentkit/src/action-providers/sushi/sushiDataActionProvider.ts

@@ -56,7 +56,17 @@ Important notes:
           "Content-Type": "application/json",
           Accept: "application/json",
         },
-        body: `{"query":"query { tokenList(chainId: ${chainId}, first: 10, search: \\"${args.search}\\") { address symbol name decimals } }"}`,
+        body: JSON.stringify({
+          query: `query FindToken($chainId: Int!, $search: String!) {
+  tokenList(chainId: $chainId, first: 10, search: $search) {
+    address
+    symbol
+    name
+    decimals
+  }
+}`,
+          variables: { chainId, search: args.search },
+        }),
       });
 
       const response = await request.json();