Set the polling interval in Web3j.build not work for abi generated contract instance.

[RealDeanZhao]

Issue_title

Set the polling interval in Web3j.build not work for abi generated contract instance.

Issue_description

First I tried to build a web3j instance with the default build method. When I use the generated contract class to make a contract call, it took about 15 seconds to get the transaction receipt.
Then I tried to use Web3j.build(url, 500L,...) to build the instance, but it didn't work.
Last, I tried to load the contract instance with a custom transaction manager:

final TransactionManager txManager = new RawTransactionManager(this.web3j, this.credentials, -1L, 20, 500L); contractInstance.load(address, web3j, txManager, gasProvider)
then I can get the transaction receipt will quickly.

Issue_context

Ethereum Client: Hyperledger Besu 1.3.5
Web3j: 4.5.7

[iikirilov]

I think the polling interval in Web3j.build is used for something else. @AlexandrouR can you look into this please

[AlexandrouR]

@RealDeanZhao the polling interval that is set is used in combination with flowable the way you did it is the correct way. I will update the documentation to make this clear.