Bug 12631 – std.string.isNumeric uses among without explicit braces when calling 'std.algorithm.among' when compiling with dmd -property flag

std.string.isNumeric uses among without explicit braces when calling 'std.algorithm.among' when compiling with dmd -property flag ./phobos/std/string.d(3181): Error: not a property s[0].among!('-', '+') ./phobos/std/string.d(3210): Error: not a property c.among!('e', 'E') ./phobos/std/string.d(3217): Error: not a property s[i + 1LU].among!('-', '+') ./phobos/std/string.d(3259): Error: not a property c.among!('u', 'l', 'U', 'L') ./phobos/std/string.d(3265): Error: not a property c.among!('i', 'I') ./phobos/std/string.d(3267): Error: not a property c.among!('l', 'L', 'f', 'F', 'i', 'I') ./phobos/std/string.d(3270): Error: not a property c.among!('_', ',') ./cocoa.d/source/cocoa.d(638): called from here: isNumeric(str[2..__dollar - 1LU], false) ./cocoa.d/source/cocoa.d(641): called from here: containsOnlyTag(" ${123} ") ./cocoa.d/source/cocoa.d(641): while evaluating: static assert(containsOnlyTag(" ${123} "))

Made pull request: https://github.com/D-Programming-Language/phobos/pull/2115