Fix reading of CSV files with blank second row

[vuule]

Description

There are two options to get the names of columns in a CSV file - header or the first row. In case the first row is used, names are generated, and the only part of the row that is used is the number of detected columns.

This PR fixes the corner case where a blank line after the first (non-header) row causes the reader to detect an additional column (and return an additional column of nulls).
The fix is to break when there is a terminator character within the first row; this only happens with blank row(s) after the first data row. The reader already does this when reading column names from a header, this PR just removes this difference in behavior that was causing the bug.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[codecov]

Codecov Report

Base: 87.47% // Head: 88.10% // Increases project coverage by +0.62% 🎉

Coverage data is based on head (2ba86a6) compared to base (f817d96).
Patch has no changes to coverable lines.

Additional details and impacted files

@@               Coverage Diff                @@
##           branch-22.12   #12098      +/-   ##
================================================
+ Coverage         87.47%   88.10%   +0.62%     
================================================
  Files               133      135       +2     
  Lines             21826    22057     +231     
================================================
+ Hits              19093    19433     +340     
+ Misses             2733     2624     -109     

Impacted Files	Coverage Δ
python/cudf/cudf/core/column/interval.py	85.45% <0.00%> (-9.10%)	⬇️
python/cudf/cudf/io/text.py	91.66% <0.00%> (-8.34%)	⬇️
python/cudf/cudf/core/_base_index.py	81.28% <0.00%> (-4.27%)	⬇️
python/cudf/cudf/io/json.py	92.06% <0.00%> (-2.68%)	⬇️
python/cudf/cudf/utils/utils.py	89.91% <0.00%> (-0.69%)	⬇️
python/cudf/cudf/core/column/timedelta.py	90.17% <0.00%> (-0.58%)	⬇️
python/cudf/cudf/core/column/datetime.py	89.21% <0.00%> (-0.51%)	⬇️
python/cudf/cudf/core/column/column.py	87.96% <0.00%> (-0.46%)	⬇️
python/dask_cudf/dask_cudf/core.py	73.72% <0.00%> (-0.41%)	⬇️
python/cudf/cudf/io/parquet.py	90.45% <0.00%> (-0.39%)	⬇️
... and 42 more

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[davidwendt]

LGTM

[vuule]

@gpucibot merge