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GH-38011: [C++][Dataset] Change force close to tend to close on write (#38030)



### Rationale for this change

`CloseLargestFile()` will failed to close when non of the file has written any rows.

### What changes are included in this PR?

Change `CloseLargestFile()` to `TryCloseLargestFile()`, and not throw error when it cannot find a file that haven't write any rows.

### Are these changes tested?

no

### Are there any user-facing changes?

bugfix

* Closes: #38011

Authored-by: mwish <maplewish117@gmail.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>