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GH-39965: [C++] DatasetWriter avoid creating zero-sized batch when `max_rows_per_file` enabled (#39995)



### Rationale for this change

`DatasetWriter` might create empty `RecordBatch` when `max_rows_per_file` enabled. This is because `NextWritableChunk` might return a zero-sized batch when the file exactly contains the dest data.

### What changes are included in this PR?

Check batch-size == 0 when append to file queue

### Are these changes tested?

Yes

### Are there any user-facing changes?

User can avoid zero-sized row-group/batch.

* Closes: #39965

Authored-by: mwish <maplewish117@gmail.com>
Signed-off-by: mwish <maplewish117@gmail.com>