Release OpAddEntry.data when entry is copied and discarded (apache#10773

)

Fixes apache#10738

### Motivation

There's a ByteBuf leak that happens in ledger rollover. The repro case in apache#10738 reproduces some Netty ByteBuf leaks that are detected by the Netty Leak detector.

### Modifications

Release `OpAddEntry.data` when the original entry is copied and discarded

### Additional Context

This PR was split out of PR apache#10755 which was closed without merging.

managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/ManagedLedgerImpl.java

@@ -1504,6 +1504,8 @@ public synchronized void updateLedgersIdsComplete(Stat stat) {
                 if (existsOp.ledger != null) {
                     existsOp.close();
                     existsOp = OpAddEntry.create(existsOp.ml, existsOp.data, existsOp.getNumberOfMessages(), existsOp.callback, existsOp.ctx);
+                    // release the extra retain
+                    ReferenceCountUtil.release(existsOp.data);
                 }
                 existsOp.setLedger(currentLedger);
                 if (beforeAddEntry(existsOp)) {