Add missing dependencies on testClasses (#30527)

buildSrc/src/main/groovy/org/elasticsearch/gradle/BuildPlugin.groovy

@@ -744,6 +744,7 @@ class BuildPlugin implements Plugin<Project> {
             additionalTest.testClassesDir = test.testClassesDir
             additionalTest.configure(commonTestConfig(project))
             additionalTest.configure(config)
+            additionalTest.dependsOn(project.tasks.testClasses)
             test.dependsOn(additionalTest)
         });
         return test

modules/repository-url/build.gradle

@@ -34,6 +34,7 @@ File repositoryDir = new File(project.buildDir, "shared-repository")
 
 /** A task to start the URLFixture which exposes the repositoryDir over HTTP **/
 task urlFixture(type: AntFixture) {
+    dependsOn testClasses
     doFirst {
         repositoryDir.mkdirs()
     }