Parsing exception when Culture is not western

[nadjibus]

Hi. When trying to parse a css file while the current culture is not western (en, fr...) an exception is thrown:

ExCSS.ParseException: Unrecognized integer value '-1.'
   at ExCSS.NumberToken.get_IntegerValue()
   at ExCSS.ValueExtensions.ToInteger(IEnumerable`1 value)
   at ExCSS.StructValueConverter`1.Convert(IEnumerable`1 value)
   at ExCSS.OrValueConverter.Convert(IEnumerable`1 value)
   at ExCSS.OrValueConverter.Convert(IEnumerable`1 value)
   at ExCSS.OrValueConverter.Convert(IEnumerable`1 value)
   at ExCSS.OrValueConverter.Convert(IEnumerable`1 value)
   at ExCSS.OrValueConverter.Convert(IEnumerable`1 value)
   at ExCSS.OrValueConverter.Convert(IEnumerable`1 value)
   at ExCSS.OrValueConverter.Convert(IEnumerable`1 value)
   at ExCSS.Property.TrySetValue(TokenValue newTokenValue)
   at ExCSS.StylesheetComposer.CreateDeclarationWith(Func`2 createProperty, Token& token)
   at ExCSS.StylesheetComposer.FillDeclarations(StyleDeclaration style)
   at ExCSS.StylesheetComposer.CreateStyle(Token current)
   at ExCSS.StylesheetComposer.CreateRule(Token token)
   at ExCSS.StylesheetComposer.CreateRules(Stylesheet sheet)
   at ExCSS.StylesheetParser.Parse(TextSource source)
   at ExCSS.StylesheetParser.Parse(String content)
   at Program.<Main>$(String[] args) in D:\CssRtlTest\Program.cs:line 10
   at Program.<Main>(String[] args)

Code to reproduce:

// Switching Culture to Arabic ...
CultureInfo.CurrentCulture = CultureInfo.GetCultureInfo("ar");

// Using Bootstrap 5 CSS...
var bootstrap5 = await new HttpClient().GetStringAsync("https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/css/bootstrap.min.css"); 

// Exception: ExCSS.ParseException: Unrecognized integer value '-1.'
var stylesheet = new StylesheetParser().Parse(bootstrap5);
  
Console.WriteLine("Parsing successful!");
Console.ReadLine();

Workaround:
Temporary switch culture to Invariant before parsing:

Stylesheet stylesheet;

// Save original culture
var currentCulture = CultureInfo.CurrentCulture;

try
{
    // Temporary switching Culture to Invariant...
    CultureInfo.CurrentCulture = CultureInfo.InvariantCulture;

    // Parse CSS...
    stylesheet = new StylesheetParser().Parse(bootstrap5);
}
finally
{
    // Switch back to original culture
    CultureInfo.CurrentCulture = currentCulture;
}