Made horse armor layering fix compatible with modded horse armor

Fixes #327

Author: RaphiMC

common/src/main/java/net/raphimc/immediatelyfast/feature/core/BatchableBufferSource.java

@@ -201,8 +201,8 @@ protected int getLayerOrder(final RenderLayer layer) {
         if (layer instanceof RenderLayer.MultiPhase multiPhase) {
             final Identifier textureId = multiPhase.getPhases().texture.getId().orElse(null);
             if (textureId != null) {
-                if (textureId.toString().startsWith("minecraft:textures/entity/horse/")) {
-                    final String horseTexturePath = textureId.toString().substring(("minecraft:textures/entity/horse/").length());
+                if (textureId.getPath().startsWith("textures/entity/horse/")) {
+                    final String horseTexturePath = textureId.getPath().substring("textures/entity/horse/".length());
                     if (horseTexturePath.startsWith("horse_markings")) {
                         return 2;
                     } else if (horseTexturePath.startsWith("armor/")) {