Suppress IDE0019: Use pattern matching to avoid 'as' followed by a 'null' check

Applying the refactoring changes the order of execution

Author: bkoelman

src/JsonApiDotNetCore/Queries/Expressions/QueryExpressionRewriter.cs

@@ -2,6 +2,8 @@
 using JetBrains.Annotations;
 using JsonApiDotNetCore.Configuration;
 
+#pragma warning disable IDE0019 // Use pattern matching
+
 namespace JsonApiDotNetCore.Queries.Expressions;
 
 /// <summary>