KAFKA-10199: Enable state updater by default

We have already enabled the state updater by default once.
However, we ran into issues that forced us to disable it again.
We think that we fixed those issues. So we want to enable the
state updater again by default.

streams/src/main/java/org/apache/kafka/streams/StreamsConfig.java

@@ -1251,7 +1251,7 @@ public static class InternalConfig {
         public static final String STATE_UPDATER_ENABLED = "__state.updater.enabled__";
 
         public static boolean getStateUpdaterEnabled(final Map<String, Object> configs) {
-            return InternalConfig.getBoolean(configs, InternalConfig.STATE_UPDATER_ENABLED, false);
+            return InternalConfig.getBoolean(configs, InternalConfig.STATE_UPDATER_ENABLED, true);
         }
 
         // Private API to enable processing threads (i.e. polling is decoupled from processing)

streams/src/test/java/org/apache/kafka/streams/processor/internals/StoreChangelogReaderTest.java

@@ -468,10 +468,10 @@ private void shouldPollWithRightTimeout(final Properties properties) {
             assertEquals(Duration.ofMillis(config.getLong(StreamsConfig.POLL_MS_CONFIG)), consumer.lastPollTimeout());
         } else {
             if (!properties.containsKey(InternalConfig.STATE_UPDATER_ENABLED)
-                    || !((boolean) properties.get(InternalConfig.STATE_UPDATER_ENABLED))) {
-                assertEquals(Duration.ZERO, consumer.lastPollTimeout());
-            } else {
+                    || (boolean) properties.get(InternalConfig.STATE_UPDATER_ENABLED)) {
                 assertEquals(Duration.ofMillis(config.getLong(StreamsConfig.POLL_MS_CONFIG)), consumer.lastPollTimeout());
+            } else {
+                assertEquals(Duration.ZERO, consumer.lastPollTimeout());
             }
         }
     }