fix IsLocalDateTime and use it in FilterJsonConverter

Author: olmobrutall

Signum.Engine/Basics/QueryLogic.cs

@@ -21,6 +21,9 @@ static QueryLogic()
     {
         QueryToken.StaticEntityExtensions = parent => Expressions.GetExtensionsTokens(parent);
         QueryToken.DynamicEntityExtensions = parent => Expressions.GetExtensionsWithParameterTokens(parent);
+        QueryToken.IsLocalDateTime = qt =>
+        qt is NetPropertyToken npt && npt.MemberInfo.Name == nameof(DateTimeOffset.DateTime) && npt.MemberInfo.DeclaringType == typeof(DateTimeOffset) ||
+        qt is EntityPropertyToken ept && Schema.Current.Field(ept.PropertyRoute) is FieldValue fv && fv.DateTimeKind == DateTimeKind.Local;
         ExtensionToken.BuildExtension = (parentType, key, parentExpression) => Expressions.BuildExtension(parentType, key, parentExpression);
         QueryToken.ImplementedByAllSubTokens = GetImplementedByAllSubTokens;
         QueryToken.IsSystemVersioned = IsSystemVersioned;

Signum.Engine/Json/FilterJsonConverter.cs

@@ -93,10 +93,11 @@ public override Filter ToFilter(QueryDescription qd, bool canAggregate, JsonSeri
         var val = value is JsonElement jtok ?
              jtok.ToObject(expectedValueType, jsonSerializerOptions) :
              value;
+
 
-        if (val is DateTime dt)
+        if (val is DateTime dt && !QueryToken.IsLocalDateTime(parsedToken))
             val = dt.FromUserInterface();
-        else if (val is ObservableCollection<DateTime?> col)
+        else if (val is ObservableCollection<DateTime?> col && !QueryToken.IsLocalDateTime(parsedToken))
             val = col.Select(dt => dt?.FromUserInterface()).ToObservableCollection();
 
         return new FilterCondition(parsedToken, operation, val);

Signum.Entities/DynamicQuery/Tokens/QueryToken.cs

@@ -260,7 +260,7 @@ public static IEnumerable<QueryToken> OnDynamicEntityExtension(QueryToken parent
         return DynamicEntityExtensions(parent);
     }
 
-    static Func<QueryToken, bool> IsLocalDateTime = qt => qt is NetPropertyToken npt &&  npt.MemberInfo.Name == nameof(DateTimeOffset.DateTime) && npt.MemberInfo.DeclaringType == typeof(DateTimeOffset);
+    public static Func<QueryToken, bool> IsLocalDateTime;
 
     public static List<QueryToken> DateTimeProperties(QueryToken parent, DateTimePrecision precision)
     {