Description

When using IotaClient with IotaClientGraphQLTransport, transaction methods like dryRunTransactionBlock() and executeTransactionBlock() throw "Unsupported method" errors.

Steps to Reproduce

1. Create an IotaClient with GraphQL transport:

   import { IotaClientGraphQLTransport } from '@iota/graphql-transport';
   import { IotaClient } from '@iota/iota-sdk/client';
   
   const client = new IotaClient({
       transport: new IotaClientGraphQLTransport({ url: graphqlUrl }),
   });

2. Try to run a dry run:

   const dryRun = await client.dryRunTransactionBlock({
       transactionBlock: transaction,
   });

Expected Behavior

Dry run should execute successfully and return transaction effects.

Actual Behavior

Throws an error indicating that the method is not supported in the GraphQL API.

Additional Failing Methods

• executeTransactionBlock() - throws UnsupportedMethodError: Method iota_executeTransactionBlock is not supported in the GraphQL API