"%1 is replaced to column letter" ... so do it

In StandardFilter dialog when not using column headers the field names
were displayed as "Column %1 A" instead of "Column A".

Change-Id: I29216eaa6b98e4a786f77d47ef20135e15d7d45a
(cherry picked from commit 2d793b1a7f08e2f42a8e9bd96b7470e15784f7cf)
Reviewed-on: https://gerrit.libreoffice.org/6591
Reviewed-by: Ivan Timofeev <timofeev.i.s@gmail.com>
Tested-by: Ivan Timofeev <timofeev.i.s@gmail.com>