Register default serializers lazily so a custom serializer can replace them without loading System.Text.Json - #2403

Possible null reference argument for parameter 'g' in 'Guid.Guid(string g)'.

Possible null reference argument for parameter 's' in 'decimal decimal.Parse(string s, IFormatProvider? provider)'.

Possible null reference argument for parameter 's' in 'DateTime DateTime.Parse(string s, IFormatProvider? provider)'.

Possible null reference argument for parameter 's' in 'DateTime DateTime.ParseExact(string s, string format, IFormatProvider? provider)'.

Possible null reference argument for parameter 'uriString' in 'Uri.Uri(string uriString, UriKind uriKind)'.

Possible null reference argument for parameter 'value' in 'object? ReflectionExtensions.FindEnumValue(Type type, string value, CultureInfo culture)'.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.