Don't use project root as working directory for Kotlin daemon

On windows using a project's root
as a working directory for the daemon
seems to prevent removing the directory
when the daemon runs.

Different projects may share an instance of the daemon,
so the issue will be present only in a project
which started the daemon.

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/KotlinGradlePluginIT.kt

@@ -64,7 +64,12 @@ class KotlinGradleIT : BaseGradleIT() {
         val wd2 = createTempDir("testRunningInDifferentDir")
         wd1.copyRecursively(wd2)
         wd1.deleteRecursively()
-        assert(!wd1.exists())
+        if (wd1.exists()) {
+            val files = buildString {
+                wd1.walk().forEach { appendln("  " + it.relativeTo(wd1).path) }
+            }
+            error("Some files in $wd1 were not removed:\n$files")
+        }
         wd0.setWritable(false)
         workingDir = wd2