AssembleEIP1559TransactionService has a package-private constructor and is never instantiated (unusable by consumers)

[kyonRay]

Description

org.fisco.bcos.sdk.v3.transaction.manager.transactionv1.AssembleEIP1559TransactionService cannot be instantiated by SDK consumers: its only constructor is package-private —

AssembleEIP1559TransactionService(Client client) { ... }   // no `public`

— and no public factory or call site in src/main constructs it (there is no new AssembleEIP1559TransactionService(...) anywhere in main code).

Impact

The EIP-1559 transaction service (deploy/send EIP-1559 transactions: deployContractEIP1559, sendEIP1559Transaction, and async variants) is unreachable from outside its own package, so users cannot use it directly, and it is untestable from other packages.

Suggested fix

Either make the constructor public, or expose it through a factory (e.g. TransactionManagerFactory / TransactionProcessorFactory) that returns an AssembleEIP1559TransactionService, mirroring how AssembleTransactionService / DefaultTransactionManager are obtained.

Found via

Attempting to write a test for the EIP-1559 service during #947 (the test had to be placed inside the ...transactionv1 package just to reach the constructor).