Bug 32477: Fix hiding all columns in item batch mod tools

Bug 32477: Fix hiding all columns in item batch mod tools

If one hides all columns in batch item modification tool
and then reloads the page or launches tool again, "Holds"
column isn't displayed and "Itemtype" column is. Also
"Itemtype" columns checkbox remains checked. This happens
because "Itemtype" columns id is out of scope of list of column
numbers set in cookies. This patch adds 3 to number of columns
in variable "allColums" to take account all 3 columns we don't
want to hide.

To test:
1. Find items to modify and modify them with batch item
modification tool.
2. Use "Hide all columns" checkbox to hide all columns.
3. Confirm all columns expect checkbox, "Title" and "Holds"
columns are hidden correctly.
4. Reload the page.
=> Note that "Holds" column is now hidden and "Itemtype"
column is displayed. Also "Itemtype" checkbox is checked.
5. Apply this patch.
6. Repeat steps 1 to 4.
=> "Holds" column should now be displayed and "Itemtype"
hidden. None of the checkbox should be checked.

Sponsored-by: Koha-Suomi Oy
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>