Bug 22024: Update translated web installer files with new class splitting rules

Bug 22024: Update translated web installer files with new class splitting rules

When adding the new splitting rules for classification sources
with bug 15836, we missed updating the translated installers.

This has the danger of data missing for new installations already
set up with 18.11.

This patch corrects the installer files.

To test:
- Verify the class_sources.sql installs correctly for all languages

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>