Configure index sorting through index settings for logsdb (#118968)

* Skip injecting `host.name` for incompatible mappings in logsdb mode * spotless * Update docs/changelog/118856.yaml * fix tsdb * Configure index sorting through index settings for logsdb * fix synthetic source usage * skip injecting host.name * fix test * fix compat * more tests * add index versioning * add index versioning * add index versioning * minor refactoring * Update docs/changelog/118968.yaml * address comments * inject host.name when possible * check subobjects * private settings

Author: kkrik-es

docs/changelog/118968.yaml

@@ -0,0 +1,6 @@
+pr: 118968
+summary: Configure index sorting through index settings for logsdb
+area: Logs
+type: enhancement
+issues:
+ - 118686

rest-api-spec/build.gradle

@@ -60,6 +60,12 @@ tasks.named("yamlRestCompatTestTransform").configure ({ task ->
  task.skipTest("cat.aliases/10_basic/Deprecated local parameter", "CAT APIs not covered by compatibility policy")
  task.skipTest("cat.shards/10_basic/Help", "sync_id is removed in 9.0")
  task.skipTest("search/500_date_range/from, to, include_lower, include_upper deprecated", "deprecated parameters are removed in 9.0")
+ task.skipTest("logsdb/10_settings/logsdb with default ignore dynamic beyond limit and default sorting", "skip until pr/118968 gets backported")
+ task.skipTest("logsdb/10_settings/logsdb with default ignore dynamic beyond limit and too low limit", "skip until pr/118968 gets backported")
+ task.skipTest("logsdb/10_settings/logsdb with default ignore dynamic beyond limit and subobjects false", "skip until pr/118968 gets backported")
+ task.skipTest("logsdb/10_settings/override sort missing settings", "skip until pr/118968 gets backported")
+ task.skipTest("logsdb/10_settings/override sort order settings", "skip until pr/118968 gets backported")
+ task.skipTest("logsdb/10_settings/override sort mode settings", "skip until pr/118968 gets backported")
  task.skipTest("search.vectors/41_knn_search_bbq_hnsw/Test knn search", "Scoring has changed in latest versions")
  task.skipTest("search.vectors/42_knn_search_bbq_flat/Test knn search", "Scoring has changed in latest versions")
  task.skipTest("search.vectors/180_update_dense_vector_type/Test create and update dense vector mapping with bulk indexing", "waiting for #118774 backport")