fix: fml decompile

Author: ishland

src/main/java/net/fabricmc/loom/configuration/providers/minecraft/mapped/IntermediaryMinecraftProvider.java

@@ -203,9 +203,9 @@ public List<RemappedJars> getRemappedJars() {
 		@Override
 		public List<MinecraftJar> getMinecraftJars() {
 			if (minecraftProvider.isMergedNeoForgeJar()) {
-				return List.of(getMergedJar(), getGameResourcesJar());
+				return List.of(getMergedJar(), getGameResourcesJar(), getFMLJar());
 			} else {
-				return List.of(getMergedJar(), getNeoForgeUniversalJar());
+				return List.of(getMergedJar(), getNeoForgeUniversalJar(), getFMLJar());
 			}
 		}
 

src/main/java/net/fabricmc/loom/configuration/providers/minecraft/mapped/NamedMinecraftProvider.java

@@ -236,9 +236,9 @@ public List<MinecraftJar.Type> getDependencyTypes() {
 		@Override
 		public List<MinecraftJar> getMinecraftJars() {
 			if (minecraftProvider.isMergedNeoForgeJar()) {
-				return List.of(getMergedJar(), getGameResourcesJar());
+				return List.of(getMergedJar(), getGameResourcesJar(), getFMLJar());
 			} else {
-				return List.of(getMergedJar(), getNeoForgeUniversalJar());
+				return List.of(getMergedJar(), getNeoForgeUniversalJar(), getFMLJar());
 			}
 		}