[FIX] base: japanese address pattern

original commit forgot an "s" (in %(street2)s), leading to `\n`
becoming the format character, except that's not a *valid* format'
character, yielding a ValueError "unsupported format character
'?' (0xa)" any time an address is displayed if the current country is
Japan (and the system thus uses the japanese address pattern rather
than a generic one).

Closes #20008