Tile fixes (#14388)

- Set some of the defaults in the definition to what we use for most prototypes
- Added planet variant for dirt to avoid black space
- Dirt looks like literal poop but will have another sprite for it soon

Content.Shared/Maps/ContentTileDefinition.cs

@@ -9,12 +9,10 @@ using Robust.Shared.Utility;
 
 namespace Content.Shared.Maps
 {
-    [UsedImplicitly]
     [Prototype("tile")]
     public sealed class ContentTileDefinition : IPrototype, IInheritingPrototype, ITileDefinition
     {
         public const string SpaceID = "Space";
-        private string _name = string.Empty;
 
         [ParentDataFieldAttribute(typeof(AbstractPrototypeIdArraySerializer<ContentTileDefinition>))]
         public string[]? Parents { get; private set; }
@@ -53,7 +51,7 @@ namespace Content.Shared.Maps
         /// </summary>
         [DataField("barestepSounds")] public SoundSpecifier? BarestepSounds { get; } = new SoundCollectionSpecifier("BarestepHard");
 
-        [DataField("friction")] public float Friction { get; set; }
+        [DataField("friction")] public float Friction { get; set; } = 0.3f;
 
         [DataField("variants")] public byte Variants { get; set; } = 1;
 
@@ -62,7 +60,7 @@ namespace Content.Shared.Maps
         /// </summary>
         [DataField("placementVariants")] public byte[] PlacementVariants { get; set; } = new byte[1] { 0 };
 
-        [DataField("thermalConductivity")] public float ThermalConductivity { get; set; } = 0.05f;
+        [DataField("thermalConductivity")] public float ThermalConductivity = 0.04f;
 
         // Heat capacity is opt-in, not opt-out.
         [DataField("heatCapacity")] public float HeatCapacity = Atmospherics.MinimumHeatCapacity;