Move the spill pre-processing steps into `SpillManager`

[2010YOUY01]

Is your feature request related to a problem or challenge?

I noticed it when reviewing #18207

When writing spill files in the sort executor, it requires some pre-processing steps for the batches to spill to avoid duplicate writes, specifically

datafusion/datafusion/physical-plan/src/sorts/sort.rs

Line 409 in 167baf7

Self::organize_stringview_arrays(globally_sorted_batches)?;

This step should apply to all spilling usages, not only limited to the sort executor, so a better way is to put it inside SpillManager/InProgressSpillFile, or maybe Arrow IPC writer if possible.

Describe the solution you'd like

No response

Describe alternatives you've considered

No response

Additional context

No response