imp - Actually return an empty array on unsupported type

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We need to return an empty array and not null when we're trying to get an array of an unsupported type.

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Type: imp
Breaking: False
Doc Required: False
Part: 1/1

VisualCard/Parts/Card.cs

@@ -70,7 +70,7 @@ public TPart[] GetPartsArray<TPart>(PartsArrayEnum key) where TPart : BaseCardPa
         {
             // Check for version support
             if (!VcardParserTools.EnumArrayTypeSupported(key, CardVersion))
-                return null;
+                return [];
 
             // Get the parts enumeration according to the type
             var type = typeof(TPart);