Flip SEARCH_PIPELINE feature flag for search pipeline GA (#8613)

Signed-off-by: Louis Chu <clingzhi@amazon.com>

Author: noCharger

CHANGELOG.md

@@ -104,6 +104,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - [Search pipelines] Add Global Ignore_failure options for Processors ([#8373](https://github.com/opensearch-project/OpenSearch/pull/8373))
 - Enable Partial Flat Object ([#7997](https://github.com/opensearch-project/OpenSearch/pull/7997))
 - Add jdk.incubator.vector module support for JDK 20+ ([#8601](https://github.com/opensearch-project/OpenSearch/pull/8601))
+- Introduce full support for Search Pipeline ([#8613](https://github.com/opensearch-project/OpenSearch/pull/8613))
 
 ### Dependencies
 - Bump `com.azure:azure-storage-common` from 12.21.0 to 12.21.1 (#7566, #7814)

server/src/main/java/org/opensearch/common/util/FeatureFlags.java

@@ -106,7 +106,7 @@ public static boolean isEnabled(String featureFlagName) {
 
     public static final Setting<Boolean> EXTENSIONS_SETTING = Setting.boolSetting(EXTENSIONS, false, Property.NodeScope);
 
-    public static final Setting<Boolean> SEARCH_PIPELINE_SETTING = Setting.boolSetting(SEARCH_PIPELINE, false, Property.NodeScope);
+    public static final Setting<Boolean> SEARCH_PIPELINE_SETTING = Setting.boolSetting(SEARCH_PIPELINE, true, Property.NodeScope);
 
     public static final Setting<Boolean> IDENTITY_SETTING = Setting.boolSetting(IDENTITY, false, Property.NodeScope);