Resolves: fdo#70588 MultiLineEdits don't need WB_WORDBREAK set

and inherits from Edit which reuses that same bit for password

Change-Id: I8add146fdbc1b3402b5409f01f75c620da25a313
Reviewed-on: https://gerrit.libreoffice.org/6579
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>