Fix isBridgeContract handler

burner-wallet-plugin/tokenbridge-bw-exchange/src/utils/utils.ts

@@ -51,6 +51,9 @@ export const isBridgeContract = async (contract: Contract, allowedModes?: string
     }
     return allowedModes.includes(mode)
   } catch (e) {
+    if (e.message.includes("Returned values aren't valid")) {
       return false
     }
+    throw e
+  }
 }