Don't swallow exceptions in Store#close(). (#39035) (#39622)

Store#close() swallows any `IOException`.

Relates #39030

server/src/main/java/org/elasticsearch/index/store/Store.java

@@ -87,6 +87,7 @@ import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.PrintStream;
+import java.io.UncheckedIOException;
 import java.nio.file.NoSuchFileException;
 import java.nio.file.Path;
 import java.util.ArrayList;
@@ -416,16 +417,15 @@ public class Store extends AbstractIndexShardComponent implements Closeable, Ref
     }
 
     private void closeInternal() {
-        try {
+        // Leverage try-with-resources to close the shard lock for us
+        try (Closeable c = shardLock) {
             try {
                 directory.innerClose(); // this closes the distributorDirectory as well
             } finally {
                 onClose.accept(shardLock);
             }
         } catch (IOException e) {
-            logger.debug("failed to close directory", e);
-        } finally {
-            IOUtils.closeWhileHandlingException(shardLock);
+            throw new UncheckedIOException(e);
         }
     }