Increase ShortBlockWindow to 30 due to decreased blocktimes (backport #3226)

[mergify]

Changelist

Blocktimes were reduced from 1s to ~0.6s which decreased the short term order block window
Increase the ShortBlockWindow to 40 to account for the decreased blocktime.

Also double the mempool size to allow for more orders to live in mempool and change TTL to correspond with shortBlockWindow.

Test Plan

[Describe how this PR was tested (if applicable)]

Author/Reviewer Checklist

• If this PR has changes that result in a different app state given the same prior state and transaction list, manually add the state-breaking label.
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Summary by CodeRabbit

• Chores
  • Increased short-term order validity window (longer acceptance window for placing and cancelling orders).
  • Adjusted replay‑validation and rate‑limit thresholds to match the new short‑term window.
  • Increased transaction pool capacity and extended how long pending transactions are retained.
  • Updated end‑to‑end and rate‑limit tests to reflect the new timing and thresholds.

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This is an automatic backport of pull request #3226 done by [Mergify](https://mergify.com).

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