Fix allowRotationMirror not appearing for the YAML linter (#37343)

Initial commit

Content.Shared/Maps/ContentTileDefinition.cs

@@ -69,6 +69,11 @@ namespace Content.Shared.Maps
 
         [DataField("variants")] public byte Variants { get; set; } = 1;
 
+        /// <summary>
+        ///     Allows the tile to be rotated/mirrored when placed on a grid.
+        /// </summary>
+        [DataField] public bool AllowRotationMirror { get; set; } = false;
+
         /// <summary>
         /// This controls what variants the `variantize` command is allowed to use.
         /// </summary>