Returns true if the input consists entirely of WTF-8 codepoints (all the same restrictions as UTF-8, but allows surrogate codepoints U+D800 to U+DFFF). Does not check for well-formed WTF-8, meaning that this function does not check that all surrogate halves are unpaired.
pub fn wtf8ValidateSlice(input: []const u8) bool
pub fn wtf8ValidateSlice(input: []const u8) bool {
return utf8ValidateSliceImpl(input, .can_encode_surrogate_half);
}