Simplify gas estimation flow

[coffeexcoin]

• fix: Use estimated gas from zks_estimateFee instead of calling eth_estimateGas if fee params are not provided.
• changeset

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PR-Codex overview

This PR updates the gas estimation process in the agw-client package by utilizing zks_estimateFee for gas limits instead of eth_estimateGas. This change aims to streamline gas estimation and improve efficiency in transaction preparation.

Detailed summary

• Changed gas estimation to use zks_estimateFee instead of eth_estimateGas.
• Added gasFromFeeEstimation variable to store gas limit from fee estimation.
• Updated test cases to reflect new gas limit variables: MOCK_ETH_ESTIMATE_GAS_LIMIT and MOCK_ZKS_ESTIMATE_GAS_LIMIT.
• Adjusted conditions to prevent redundant gas estimation when already provided by fee estimation.

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[changeset-bot]

🦋 Changeset detected

Latest commit: 61d2be2

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
@abstract-foundation/agw-client	Patch
@abstract-foundation/agw-react	Patch
@abstract-foundation/web3-react-agw	Patch

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Files with missing lines	Coverage Δ
...kages/agw-client/src/actions/prepareTransaction.ts	99.23% <100.00%> (+0.03%)	⬆️