improve EnumArg errors

Author: Elektryk-Andrzej

Code/ArgumentSystem/Arguments/EnumArgument.cs

@@ -5,6 +5,7 @@
 using SER.Code.Plugin.Commands.HelpSystem;
 using SER.Code.ScriptSystem;
 using SER.Code.TokenSystem.Tokens;
+using SER.Code.TokenSystem.Tokens.Interfaces;
 
 namespace SER.Code.ArgumentSystem.Arguments;
 
@@ -25,6 +26,11 @@ public DynamicTryGet<TEnum> GetConvertSolution(BaseToken token)
             return value;
         }
 
+        if (token is not IValueToken valToken || valToken.IsConstant)
+        {
+            return $"Not a {InputDescription}.";
+        }
+
         return new(() =>
         {
             if (InternalConvert(token).HasErrored(out var error, out value))
@@ -57,8 +63,7 @@ public static TryGet<object> Convert(BaseToken token, Script script, Type enumTy
             return Enum.Parse(enumType, stringRep, true);
         }
 
-        return $"Value '{stringRep}' does not represent a valid {enumType.GetAccurateName()} " +
-               $"enum value.";
+        return $"Value '{token.RawRep}' is not a {enumType.GetAccurateName()} enum value.";
     }
 
     private TryGet<TEnum> InternalConvert(BaseToken token)