feat: switch ethers JSON-RPC provider to StaticJsonRpcProvider

[gomesalexandre]

Description

... and inject it to MarketServiceManager and investor-foxy, to avoid multiple instantiations that trigger calls to eth_chainId.
No batching, but less requests in the end, which means things are effectively faster and more performant.

Pull Request Type

• 🐛 Bug fix (Non-breaking Change: Fixes an issue)
• 🛠️ Chore (Non-breaking Change: Doc updates, pkg upgrades, typos, etc..)
• 💅 New Feature (Breaking/Non-breaking Change)

Issue (if applicable)

• relates to [Spike] Reduce eth daemon calls #6193

Risk

High Risk PRs Require 2 approvals

What protocols, transaction types or contract interactions might be affected by this PR?

Testing

Engineering

• Compare network tab against develop
• Ensure we don't spam eth_chainId payloads aymore

Operations

Screenshots (if applicable)

Develop

• 113 daemon.ethereum XHRs

• Chatty eth_chainId

And many, many more

This diff

• 95 daemon.ethereum XHRs

• Not-so-chatty eth_chainId

Now only called once by BaseTransactionParser

[gomesalexandre]

Current dependencies on/for this PR:

• feat: bump ethers to v6 #6224
• feat: switch ethers JSON-RPC provider to StaticJsonRpcProvider #6223 👈
• feat: don't initialize ethersProvider in module scope #6222
• develop

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