Prevent the modification of a tax which is used in an opened POS
session. This avoids inconsistency between the payment and the order
accounting entries.

opw-1859092

Continue work of 6292600b for languages not published on Transifex too
Remove en_GB file that was containing too many errors (e.g. 'PoS Order'
translated 'Sale Order')

Fixes #19661

Global search and replace badly formated %s