fix(csharp): set BUFFER_LENGTH to null in GetColumns result; re-enable CanGetColumnsExtended for SEA (PECO-3008)#444

eric-wang-1990 wants to merge 4 commits into

mainadbc-drivers/databricks:mainfrom

fix/peco-3008-sea-get-columns-extended-buffer-lengthadbc-drivers/databricks:fix/peco-3008-sea-get-columns-extended-buffer-lengthCopy head branch name to clipboard