test: temporarily mute tests involving subobjects

Author: mromaios

muted-tests.yml

@@ -318,6 +318,7 @@ tests:
 - class: org.elasticsearch.versioning.ConcurrentSeqNoVersioningIT
   method: testSeqNoCASLinearizability
   issue: https://github.com/elastic/elasticsearch/issues/117249
+<<<<<<< Updated upstream
 - class: org.elasticsearch.test.rest.yaml.CcsCommonYamlTestSuiteIT
   method: test {p0=field_caps/10_basic/Field caps for number field with only doc values}
   issue: https://github.com/elastic/elasticsearch/issues/136244
@@ -441,6 +442,8 @@ tests:
 - class: org.elasticsearch.xpack.esql.optimizer.rules.physical.local.SubstituteRoundToTests
   method: testSubqueryWithCountStarAndDateTrunc {default}
   issue: https://github.com/elastic/elasticsearch/issues/138601
+- class: org.elasticsearch.backwards.MixedClusterClientYamlTestSuiteIT
+  issue: https://github.com/elastic/elasticsearch/issues/138649
 
 # Examples:
 #