eth_feeHistory should take float64 for rewardPercentiles to be compatible with developer tooling

[jaeaster]

Checklist

• This is not a security-related bug/issue. If it is, please follow please follow the security policy.
• This is not a question or a support request. If you have any lotus related questions, please ask in the lotus forum.
• This is not a new feature request. If it is, please file a feature request instead.
• This is not an enhancement request. If it is, please file a improvement suggestion instead.
• I have searched on the issue tracker and the lotus forum, and there is no existing related issue or discussion.
• I am running the Latest release, or the most recent RC(release canadiate) for the upcoming release or the dev branch(master), or have an issue updating to any of these.
• I did not make any code changes to lotus.

Lotus component

• lotus daemon - chain sync
• lotus miner - mining and block production
• lotus miner/worker - sealing
• lotus miner - proving(WindowPoSt)
• lotus miner/market - storage deal
• lotus miner/market - retrieval deal
• lotus miner/market - data transfer
• lotus client
• lotus JSON-RPC API
• lotus message management (mpool)
• Other

Lotus Version

Lotus version of Glif RPC: https://wallaby.node.glif.io/rpc/v1

Describe the Bug

Trying to deploy smart contracts to Wallaby using Foundry / forge script. Foundry makes an eth_feeHistory call to the RPC, which fails because of a parameter type mismatch between lotus ETH JSON-RPC and Geth, e.g.

Lotus => []int64 rewardPercentiles
Geth =>  []float64 rewardPercentiles

Relevant source code:
Lotus: https://github.com/filecoin-project/lotus/blob/release/fevm-wallaby/node/impl/full/eth.go#L421
Geth: https://github.com/ethereum/go-ethereum/blob/master/ethclient/ethclient.go#L516

Logging Information

# Error from Foundry
Error:
Failed to estimate EIP1559 fees

Context:
- Error #0: Failed fetch EIP1559 fees
- Error filecoin-project/lotus#1: (code: -32700, message: unmarshaling params for 'eth_feeHistory' (param: *[]int64): json: cannot unmarshal number 5.0 into Go value of type int64, data: None)
make: *** [testnet_deploy] Error 1

# Example of correct response from other RPC
# ETH mainnet
const provider = new _ethers.providers.JsonRpcProvider("https://ethereum.publicnode.com")
await provider.send("eth_feeHistory", ["0x1", "latest", [5.0001]])
=> {oldestBlock: '0xf46b7a', reward: Array(1), baseFeePerGas: Array(2), gasUsedRatio: Array(1)}

# Wallaby
const provider = new _ethers.providers.JsonRpcProvider("https://wallaby.node.glif.io/rpc/v1")
await provider.send("eth_feeHistory", ["0x1", "latest", [5.0001]])

=> unmarshaling params for 'eth_feeHistory' (param: *[]int64): json: cannot unmarshal number 5.0001 into Go value of type int64

Repo Steps

How to reproduce:

1. Install Foundry
2. Clone this basic repo https://github.com/medusa-network/wallaby-foundry-test-repo
3. Fund an account with the wallaby faucet and add the private key to a .env file: PRIVATE_KEY="wallaby-private-key"
4. Run make testnet_deploy, which tries to deploy the SampleContract to wallaby and fails