Closes Bears-R-Us#3695: Fix Parquet Fixed-Length Code Path for Incorr…

…ect File Size Assumption (Bears-R-Us#3696)

* Fix Parquet Fixed-Length Code Path for Incorrect File Size Assumption
The current implementation of the fixed-length code path for reading Parquet files incorrectly assumes that all files within a dataset have the same number of strings. This can lead to incorrect results or unexpected behavior when dealing with datasets where files have varying numbers of strings.

* Remove accidental +

src/ParquetMsg.chpl

@@ -1029,7 +1029,8 @@ module ParquetMsg {
  byteSizes = calcStrSizesAndOffset(entrySeg.a, filenames, sizes, dsetname);
  } else {
  entrySeg.a = fixedLen;
- byteSizes = fixedLen*len;
+ for i in sizes.domain do
+ byteSizes[i] = fixedLen*sizes[i];
  }
  entrySeg.a = (+ scan entrySeg.a) - entrySeg.a;