EQL: Mute bwc tests that have incompatibilities with Java 23 (elastic…

…#112699)

The switch to Java 23 removed support for COMPAT locale provider, so
running old versions (< 8.15.2) in a mixed cluster will result in
different results for date format (eg. month and day names are truncated
to three letters).

Fixes elastic#112617

muted-tests.yml

@@ -178,8 +178,6 @@ tests:
 - class: org.elasticsearch.xpack.ml.integration.MlJobIT
   method: testPutJob_GivenFarequoteConfig
   issue: https://github.com/elastic/elasticsearch/issues/112382
-- class: org.elasticsearch.xpack.eql.EqlClientYamlIT
-  issue: https://github.com/elastic/elasticsearch/issues/112617
 - class: org.elasticsearch.xpack.security.authc.kerberos.KerberosTicketValidatorTests
   method: testWhenKeyTabWithInvalidContentFailsValidation
   issue: https://github.com/elastic/elasticsearch/issues/112631

x-pack/plugin/eql/qa/rest/build.gradle

@@ -30,6 +30,14 @@ tasks.named('yamlRestTestV7CompatTest') {
   usesDefaultDistribution()
 }
 
+tasks.named("yamlRestTestV7CompatTransform").configure {task ->
+  task.skipTest("eql/10_basic/Execute EQL events query with wildcard (*) fields filtering.", "Change of locale with Java 23 makes these tests non deterministic")
+  task.skipTest("eql/10_basic/Execute EQL sequence with fields filtering.", "Change of locale with Java 23 makes these tests non deterministic")
+  task.skipTest("eql/10_basic/Execute EQL sequence with custom format for timestamp field.", "Change of locale with Java 23 makes these tests non deterministic")
+  task.skipTest("eql/10_basic/Execute EQL events query with fields filtering", "Change of locale with Java 23 makes these tests non deterministic")
+  task.skipTest("eql/10_basic/Execute EQL sequence with wildcard (*) fields filtering.", "Change of locale with Java 23 makes these tests non deterministic")
+}
+
 if (BuildParams.inFipsJvm){
   // This test cluster is using a BASIC license and FIPS 140 mode is not supported in BASIC
   tasks.named("javaRestTest").configure{enabled = false }