four digit numbers can be written without separator, so it would be
safer to obtain the separator by formatting a five digit number. The bug
was found with the locale 'es-ES', where the format returned for '1000'
was '1000' instead of the expected '1.000'. We add the specific expect
clause on the test for it.
On branch fix/numberGroupSeparator
Changes to be committed:
modified: packages/localize/src/number/getGroupSeparator.js
modified: packages/localize/test/number/getGroupSeparator.test.js
