Add integration tests for transaction APIs

[CTTY]

Is your feature request related to a problem or challenge?

Now many APIs in transaction/mod.rs don't have an integration tests to test if they actually work after committing the transaction. We can probably create a new test to test these APIs using a memory catalog

Describe the solution you'd like

No response

Willingness to contribute

I would be willing to contribute to this feature with guidance from the Iceberg Rust community

[github-actions]

This issue has been automatically marked as stale because it has been open for 180 days with no activity. It will be closed in next 14 days if no further activity occurs. To permanently prevent this issue from being considered stale, add the label 'not-stale', but commenting on the issue is preferred when possible.

[liurenjie1024]

Missing feature