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GH-40422: [C++][FlightRPC] Add missing expiration_time arguments (#40425)



### Rationale for this change

This happens when `-DARROW_BUILD_BENCHMARKS=ON` and sometimes cannot be detected by CI.

### What changes are included in this PR?

Add missing `expiration_time` and `app_metadata` arguments as default.

### Are these changes tested?

yes (build and run unit test)

### Are there any user-facing changes?

No

* GitHub Issue: #40422

Authored-by: Hyunseok Seo <hsseo0501@gmail.com>
Signed-off-by: David Li <li.davidm96@gmail.com>