[FEA] Change PQ writer's row group size default from 128 MB to 1M rows.

[mhaseeb123]

Is your feature request related to a problem? Please describe.
Currently, we can end up with very-thin-strip like row groups when writing wide columns in Parquet which can hurt reader's performance quite a bit (reading metadata for each row group). I wish we could remove the default 128MB limit on writer and use 1M rows limit to end up with fairly squared wide-tables.

Describe the solution you'd like
Remove the default 128MB row group limit unless explicitly specified by the user as options.

Describe alternatives you've considered
N/A

Additional context
We also need a benchmark wide-table to measure the before and after performance.