ext/intl: fix test formatter_format_currency2.phpt (php#4)

Both грн. and ₴ are valid symbols for the Ukrainian hryvnia, but the
test only allowed ₴. Allow both instead. This has precedent in the
formatter_format[0-9]*.phpt tests; I'm reusing the same regex here.

Author: mtraver

ext/intl/tests/formatter_format_currency2.phpt

@@ -46,5 +46,5 @@ ut_run();
 en_UK: '£1,234,567.89'
 en_US: '$1,234,567.89'
 ru: '1 234 567,89 р.'
-uk: '1 234 567,89 ₴'
+uk: '1 234 567,89 %rгрн\.|₴%r'
 en: 'UAH%A1,234,567.89'