Actually use CleanupTask in TempLocationManager (#8420)

This task was never scheduled or executed, but its countdown-latch was waited on during shutdown.

This resulted in the following log message each time a process was launched with profiling enabled:

[dd.trace 2025-02-18 15:07:21:489 +0000] [Temp Location Manager Cleanup] INFO com.datadog.profiling.controller.TempLocationManager - Cleanup task timed out. /var/folders/6l/65lfwqj14ps6w4gt7495gly80000gq/T/ddprof/pid_4866 temp directory might not have been cleaned up properly

Author: mcculls

dd-java-agent/agent-profiling/profiling-controller/src/main/java/com/datadog/profiling/controller/TempLocationManager.java

@@ -294,7 +294,7 @@ private TempLocationManager() {
     tempDir = baseTempDir.resolve(TEMPDIR_PREFIX + pid);
     if (runStartupCleanup) {
       // do not execute the background cleanup task when running in tests
-      AgentTaskScheduler.INSTANCE.execute(() -> cleanup(false));
+      AgentTaskScheduler.INSTANCE.execute(cleanupTask);
     }
 
     Thread selfCleanup =