Fix logsdb settings provider mapping filters (#136119) (#136200)

Fixes #136107

(cherry picked from commit d513723)

# Conflicts:
#	x-pack/plugin/logsdb/src/main/java/org/elasticsearch/xpack/logsdb/LogsdbIndexModeSettingsProvider.java
#	x-pack/plugin/logsdb/src/test/java/org/elasticsearch/xpack/logsdb/LogsdbIndexModeSettingsProviderTests.java
#	x-pack/plugin/logsdb/src/yamlRestTest/resources/rest-api-spec/test/30_logsdb_default_mapping.yml

Author: jordan-powers

docs/changelog/136119.yaml

@@ -0,0 +1,6 @@
+pr: 136119
+summary: Fix logsdb settings provider mapping filters
+area: Logs
+type: bug
+issues:
+ - 136107

x-pack/plugin/logsdb/src/main/java/org/elasticsearch/xpack/logsdb/LogsdbIndexModeSettingsProvider.java

@@ -42,14 +42,19 @@
 import java.util.Locale;
 import java.util.Set;
 import java.util.function.Supplier;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import static org.elasticsearch.cluster.metadata.IndexMetadata.INDEX_ROUTING_PATH;
 import static org.elasticsearch.xpack.logsdb.LogsDBPlugin.CLUSTER_LOGSDB_ENABLED;
 
 final class LogsdbIndexModeSettingsProvider implements IndexSettingProvider {
     private static final Logger LOGGER = LogManager.getLogger(LogsdbIndexModeSettingsProvider.class);
     static final String LOGS_PATTERN = "logs-*-*";
-    private static final Set<String> MAPPING_INCLUDES = Set.of("_doc._source.*", "_doc.properties.host**", "_doc.subobjects");
+    private static final Set<String> MAPPING_INCLUDES = Set.of("_source.*", "properties.host**", "subobjects")
+        .stream()
+        .flatMap(v -> Stream.of(v, "_doc." + v))
+        .collect(Collectors.toSet());
 
     private final LogsdbLicenseService licenseService;
     private final SetOnce<CheckedFunction<IndexMetadata, MapperService, IOException>> mapperServiceFactory = new SetOnce<>();