fix: cap recent completed transactions at 10

[grandpig]

Summary

• Fix an off-by-one error in the transaction store
• Ensure that at most 10 completed transactions are retained
• Keep pending transactions outside the completed transaction limit
• Add a regression test

Root cause

The existing filter uses a post-increment with <=, which allows the 11th completed transaction to pass:

completedTransactionCount++ <= MAX_COMPLETED_TRANSACTIONS

[vercel]

@grandpig is attempting to deploy a commit to the rainbowdotme Team on Vercel.

A member of the Team first needs to authorize it.

[changeset-bot]

🦋 Changeset detected

Latest commit: 9a2c7ae

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

This PR includes changesets to release 18 packages

Name	Type
@rainbow-me/rainbowkit	Patch
example	Patch
@rainbow-me/rainbow-button	Patch
rainbowkit-next-app	Patch
site	Patch
with-create-react-app	Patch
with-next-app-i18n	Patch
with-next-app	Patch
with-next-custom-button	Patch
with-next-mint-nft	Patch
with-next-siwe-iron-session	Patch
with-next-siwe-next-auth	Patch
with-next-wallet-button	Patch
with-next	Patch
with-react-router	Patch
with-remix	Patch
with-vite	Patch
with-next-rainbow-button	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[grandpig]

@DanielSinclair Hi, Could you please review this PR at your convenience? Thank you very much.