Sibling of enforce access to translog via engine

Since #29542, we no longer expose translog instance
but only provide creating translog snapshot method. This commit adapts
that change in CCR branch.

Relates #29542

Author: dnhatn

x-pack/plugin/ccr/src/main/java/org/elasticsearch/xpack/ccr/action/ShardChangesAction.java

@@ -262,7 +262,7 @@ static Response getOperationsBetween(IndexShard indexShard, long minSeqNo, long
         final Queue<Translog.Operation> orderedOps = new PriorityQueue<>(Comparator.comparingLong(Translog.Operation::seqNo));
 
         final List<Translog.Operation> operations = new ArrayList<>();
-        try (Translog.Snapshot snapshot = indexShard.getTranslog().getSnapshotBetween(minSeqNo, maxSeqNo)) {
+        try (Translog.Snapshot snapshot = indexShard.newTranslogSnapshotBetween(minSeqNo, maxSeqNo)) {
             for (Translog.Operation unorderedOp = snapshot.next(); unorderedOp != null; unorderedOp = snapshot.next()) {
                 if (unorderedOp.seqNo() < minSeqNo || unorderedOp.seqNo() > maxSeqNo) {
                     continue;