[pulsar-broker] Disable stickyRead by default (#5321)

(cherry picked from commit 87aa78ba)

pulsar-broker-common/src/main/java/org/apache/pulsar/broker/ServiceConfiguration.java

@@ -769,7 +769,7 @@ public class ServiceConfiguration implements PulsarConfiguration {
             + "a single bookie.\n" +
             "If this flag is enabled, the client will use one single bookie (by " +
             "preference) to read all entries for a ledger.")
-    private boolean bookkeeperEnableStickyReads = true;
+    private boolean bookkeeperEnableStickyReads = false;
 
     /**** --- Managed Ledger --- ****/
     @FieldContext(