Add backwards enchantment names

mappings/diff/mapping-1.20.5to1.20.3.json

@@ -140,6 +140,11 @@
     "breach": "",
     "wind_burst": ""
   },
+  "enchantmentnames": {
+    "density": "Density",
+    "breach": "Breach",
+    "wind_burst": "Wind Burst"
+  },
   "blockstates": {
     "vault": "spawner",
     "heavy_core": "wither_skeleton_skull[powered=false,rotation=0]",

src/main/java/com/viaversion/mappingsgenerator/MappingsOptimizer.java

@@ -187,6 +187,7 @@ public final class MappingsOptimizer {
 
         if (diffObject != null) {
             names("items", "itemnames");
+            names("enchantments", "enchantmentnames");
             fullNames("entitynames", "entitynames");
 
             if (backwards) {