[PLAT-15341] updated time drift warn threshold to match alert

Summary:
Health check threshold was set to 250 by default, while the alert uses
200 by default. Updated the health check to match the alert.

Test Plan: itest

Reviewers: amalyshev, yash.priyam, sanketh

Reviewed By: sanketh

Subscribers: yugaware

Differential Revision: https://phorge.dev.yugabyte.com/D38321

managed/src/main/resources/reference.conf

@@ -308,7 +308,7 @@ yb {
 
   health_checks {
     check_clock_time_drift = true
-    time_drift_wrn_threshold_ms = 250
+    time_drift_wrn_threshold_ms = 200
     time_drift_err_threshold_ms = 400
     clock_sync_service_required = true
   }