Fake service to limit tests concurrency

Required for KTI-1553

repo/gradle-build-conventions/buildsrc-compat/src/main/kotlin/ConcurrencyLimitService.kt

@@ -0,0 +1,12 @@
+import org.gradle.api.services.BuildService
+import org.gradle.api.services.BuildServiceParameters
+
+/*
+ * Copyright 2010-2024 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+abstract class ConcurrencyLimitService : BuildService<ConcurrencyLimitService.Params> {
+    interface Params : BuildServiceParameters
+
+}

repo/gradle-build-conventions/buildsrc-compat/src/main/kotlin/tasks.kt

@@ -120,6 +120,10 @@ fun Project.projectTest(
     defineJDKEnvVariables: List<JdkMajorVersion> = emptyList(),
     body: Test.() -> Unit = {},
 ): TaskProvider<Test> {
+    val concurrencyLimitService =
+        project.gradle.sharedServices.registerIfAbsent("concurrencyLimitService", ConcurrencyLimitService::class) {
+            maxParallelUsages = 1
+        }
     val shouldInstrument = project.providers.gradleProperty("kotlin.test.instrumentation.disable")
         .orNull?.toBoolean() != true
     if (shouldInstrument) {
@@ -202,6 +206,7 @@ fun Project.projectTest(
             defaultMaxMemoryPerTestWorkerMb
 
         maxHeapSize = "${memoryPerTestProcessMb}m"
+        usesService(concurrencyLimitService)
 
         if (minHeapSizeMb != null) {
             minHeapSize = "${minHeapSizeMb}m"