feat: stop refetching network fees after hop execution

[gomesalexandre]

Description

What the box say, this precisely does.

Issue (if applicable)

• closes Disable network fee estimation during transaction pending state on swapper #8560
• relates to Ledger signing broken for a few services #8574

Risk

High Risk PRs Require 2 approvals

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

Low to none

Testing

• Ensure network fees still refetch at 15s interval (assuming your window/tab is active) while the Tx for the current hop hasn't been initiated
• Ensure fees are not refetched anymore after signing and broadcasting the Tx for the current hop.

Engineering

• ^

Operations

• 🏁 My feature is behind a flag and doesn't require operations testing (yet)

• ^

Screenshots (if applicable)

https://jam.dev/c/76327510-a741-4d27-b786-24ae66c882fb

[0xApotheosis]

Does indeed what it says on the box!

Suggestion: Architecturally I'd prefer to see this logic in components/MultiHopTrade/components/TradeConfirm/TradeConfirmFooter.tsx and passed down in the enabled prop of useTradeNetworkFeeCryptoBaseUnit so that the useTradeNetworkFeeCryptoBaseUnit hook doesn't concern itself with the current state.