fix: respect max_gas_wanted for mempool

[mmsqe]

Description

• max-tx-gas-wanted was broken since sdk 50
• depends on feat(mempool)!: respect gas wanted returned by ante handler cosmos-sdk#25338
• for test info: pytest -vv -s test_max_gas_wanted.py --chain-config evmd

Closes: #593

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[Hellobloc]

Nice job!

[mmsqe]

Nice job!

acutally backport sdk seems a breaking change, maybe we could just clean up here and keep max-tx-gas-wanted as 0

[vladjdk]

While we wait for the SDK change to be reviewed, could you fix the go.mod merge conflicts?

[github-actions]

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[greptile-apps]

PR author is not in the allowed authors list.

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[aljo242]

blocked on the cosmos-sdk replace directive: both go.mod files replace cosmos/cosmos-sdk with github.com/mmsqe/cosmos-sdk v0.46.0-beta2.0.20260526155725-0c80f02aefb0. needs cosmos/cosmos-sdk#25338 to land upstream before the replace can be dropped and this merged. the fix itself looks correct.