Improve sqllogicteset speed by creating only a single large file rather than 2#20586

Tim-53 wants to merge 4 commits intoapache:mainapache/datafusion:mainfrom

Tim-53:perf/reuse-parquet-file-push-down-filter-regressionTim-53/datafusion:perf/reuse-parquet-file-push-down-filter-regressionCopy head branch name to clipboard