Fix Gradle configuration

This change was made to master, this commit brings it over to
index-lifecycle.

See #32409

x-pack/plugin/ilm/build.gradle

@@ -13,7 +13,8 @@ esplugin {
 archivesBaseName = 'x-pack-ilm'
 
 dependencies {
-    compileOnly project(path: xpackModule('core'), configuration: 'shadow')
+    // "org.elasticsearch.plugin:x-pack-core:${version}" doesn't work with idea because the testArtifacts are also here
+    compileOnly project(path: xpackModule('core'), configuration: 'default')
     testCompile project(path: xpackModule('core'), configuration: 'testArtifacts')
 }