fix: set L1 fee rate to zero in eth_estimateGas if sender has no balance

[exeokan]

Description

When the from address is not specified or has zero balance (a simulation scenario), eth_estimateGas failed because the transaction was inspected using a non-zero L1 fee rate.
This PR resolves the issue by executing with a zero L1 fee rate in those cases, and computing the L1 fee afterward in the handler using the L1 diff from execution.

Testing

Added test_estimate_gas_no_balance.

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.5%. Comparing base (7e79a8a) to head (90f9593).
⚠️ Report is 2 commits behind head on nightly.

Files with missing lines	Patch %	Lines
crates/evm/src/query.rs	80.0%	5 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
crates/evm/src/query.rs	90.1% <80.0%> (+<0.1%)	⬆️

... and 10 files with indirect coverage changes

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[Copilot]

Pull request overview

Fixes eth_estimateGas failing for low-/zero-balance from addresses by preventing L1 fee charging during the EVM simulation, while still returning an l1_fee estimate computed from the execution’s recorded L1 diff size.

Changes:

• Run eth_estimateGas simulations with l1_fee_rate = 0 to avoid "Not enough funds for L1 fee" failures during inspection.
• Recompute l1_fee in the RPC handler using tx_info.l1_diff_size * real_l1_fee_rate (instead of relying on tx_info.l1_fee produced by a zero-fee simulation).
• Add test_estimate_gas_no_balance to cover estimateGas behavior when from has zero balance.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
crates/evm/src/query.rs	Adjusts estimate gas execution to simulate with zero L1 fee rate and recompute L1 fee from l1_diff_size.
crates/evm/src/tests/queries/estimate_gas_tests.rs	Adds a regression test ensuring eth_estimateGas succeeds for zero-balance from (except value transfers).

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