eth/gasprice: fix wrong gas price with empty blocks

[gzliudan]

Proposed changes

This PR upgrades package eth/gasprice with below PRs from geth:

• eth/gasprice: sanitize max header and block history ethereum/go-ethereum#23886
• common/lru: add generic LRU implementation ethereum/go-ethereum#26162
• eth: use slices package for sorting ethereum/go-ethereum#27490
• all: update golang/x/ext and fix slice sorting fallout ethereum/go-ethereum#27909
• all: remove dependency on golang.org/exp ethereum/go-ethereum#29314
• eth/gasprice: remove default from config ethereum/go-ethereum#30080

And this PR also fixed the wrong gas price with empty blocks.

Types of changes

What types of changes does your code introduce to XDC network?
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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)
• Regular KTLO or any of the maintaince work. e.g code style
• CICD Improvement

Impacted Components

Which part of the codebase this PR will touch base on,

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• Consensus
• Account
• Network
• Geth
• Smart Contract
• External components
• Not sure (Please specify below)

Checklist

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• This PR has sufficient test coverage (unit/integration test) OR I have provided reason in the PR description for not having test coverage
• Provide an end-to-end test plan in the PR description on how to manually test it on the devnet/testnet.
• Tested the backwards compatibility.
• Tested with XDC nodes running this version co-exist with those running the previous version.
• Relevant documentation has been updated as part of this PR
• N/A