fix: warning that only occurs in the github build?

Author: ascott18

src/IntelliTect.Coalesce/Utilities/ExpressionExtensions.cs

@@ -86,7 +86,7 @@ public static Expression Call(this Expression instanceTarget, MethodInfo method,
                 // passing the instanceTarget as the first param.
                 return Expression.Call(
                     method,
-                    [instanceTarget, .. methodParams]
+                    methodParams is null ? [instanceTarget] : [instanceTarget, ..methodParams]
                 );
             }