Fix a bug introduced by the previous optimization where properties wo…

…uld be excluded from search because their "search field" was synthesized and as such not found in the string table.

Now we add two fields for names and values, each of which should be found in the string table.

src/StructuredLogViewer/Search.cs

@@ -95,7 +95,8 @@ public static void PopulateSearchFields(object node, Action<string> addSearchFie
             var nameValueNode = node as NameValueNode;
             if (nameValueNode != null)
             {
-                addSearchField(nameValueNode.Name + " = " + nameValueNode.Value);
+                addSearchField(nameValueNode.Name);
+                addSearchField(nameValueNode.Value);
             }
 
             var diagnostic = node as AbstractDiagnostic;