Add back-compat indices for 9.4.1

lucene/backward-codecs/src/test/org/apache/lucene/backward_index/TestBackwardsCompatibility.java

@@ -357,7 +357,11 @@ public class TestBackwardsCompatibility extends LuceneTestCase {
     "9.2.0-cfs",
     "9.2.0-nocfs",
     "9.3.0-cfs",
-    "9.3.0-nocfs"
+    "9.3.0-nocfs",
+    "9.4.0-cfs",
+    "9.4.0-nocfs",
+    "9.4.1-cfs",
+    "9.4.1-nocfs"
   };
 
   public static String[] getOldNames() {
@@ -368,7 +372,9 @@ public class TestBackwardsCompatibility extends LuceneTestCase {
     "sorted.9.0.0", // Force on separate lines
     "sorted.9.1.0",
     "sorted.9.2.0",
-    "sorted.9.3.0"
+    "sorted.9.3.0",
+    "sorted.9.4.0",
+    "sorted.9.4.1"
   };
 
   public static String[] getOldSortedNames() {