fix: address review feedback

Author: s0wa48

agents/polymarket/polymarket.py

@@ -57,7 +57,7 @@ def __init__(self) -> None:
         self.ctf_address = "0x4D97DCd97eC945f40cF65F87097ACe5EA0476045"
 
         self.web3 = Web3(Web3.HTTPProvider(self.polygon_rpc))
-        self.web3.middleware_onion.inject(geth_poa_middleware, layer=0)
+        self.web3.middleware_onion.inject(ExtraDataToPOAMiddleware, layer=0)
 
         self.usdc = self.web3.eth.contract(
             address=self.usdc_address, abi=self.erc20_approve