Support SubscribeFullPendingTransactions from go-ethereum

[yuichiroaoki]

Description

This enables the full transaction body subscription, SubscribeFullPendingTransactions.
It was implemented in go-ethererum with this
PR(ethereum/go-ethereum#25186).

You can find the whole conversation regarding this issue here (ethereum/go-ethereum#24524).

Changes

• Bugfix (non-breaking change that solves an issue)
• Hotfix (change that solves an urgent issue, and requires immediate attention)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)
• Changes only for a subset of nodes

Checklist

• I have added at least 2 reviewer or the whole pos-v1 team
• I have added sufficient documentation in code
• I will be resolving comments - if any - by pushing each fix in a separate commit and linking the commit hash in the comment reply
• Created a task in Jira and informed the team for implementation in Erigon client (if applicable)
• Includes RPC methods changes, and the Notion documentation has been updated

Cross repository changes

• This PR requires changes to heimdall
  • In case link the PR here:
• This PR requires changes to matic-cli
  • In case link the PR here:

Testing

• I have added unit tests
• I have added tests to CI
• I have tested this code manually on local environment
• I have tested this code manually on remote devnet using express-cli
• I have tested this code manually on mumbai
• I have created new e2e tests into express-cli

[manav2401]

Hey, thanks for raising the PR. We're already working on merging the upstream changes from geth and this change will be accounted in it. Closing this for now, thanks!