fix nullable in generated sources

Author: dealloc

src/Helldivers-2-Core/Mapping/V1/PlanetMapper.cs

@@ -94,7 +94,7 @@ private Planet MapToV1(MappingContext context, PlanetInfo info, PlanetStatus sta
     private Region MapToV1(Models.ArrowHead.Info.PlanetRegion region, Models.ArrowHead.Status.PlanetRegionStatus? status, MappingContext context)
     {
         string? owner = null;
-        (string Name, string Description)? planetRegion = null;
+        (string Name, string? Description)? planetRegion = null;
         if (status is { Owner: var faction })
             Static.Factions.TryGetValue(faction, out owner);
 

src/Helldivers-2-SourceGen/Parsers/BaseJsonParser.cs

@@ -11,6 +11,7 @@ namespace Helldivers.SourceGen.Parsers;
 public abstract class BaseJsonParser : IJsonParser
 {
     private const string TEMPLATE = @"// <auto-generated />
+#nullable enable
 #pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
 using global::System.Collections.Generic;
 using global::Helldivers.Models.Domain.Localization;