Replace kotlin-test project dependencies in the project

Use dependency helper function that chooses whether to take them
from the bootstrap repository or from a configuration of kotlin-test

KT-61969

prepare/compiler-embeddable/build.gradle.kts

@@ -23,7 +23,7 @@ dependencies {
     runtimeOnly(project(":kotlin-daemon-embeddable"))
     runtimeOnly(commonDependency("org.jetbrains.intellij.deps", "trove4j"))
     testImplementation(libs.junit4)
-    testApi(project(":kotlin-test:kotlin-test-junit"))
+    testApi(kotlinTest("junit"))
     testCompilationClasspath(kotlinStdlib())
 }