Enable metrics by default

Author: adinauer

sentry/src/main/java/io/sentry/SentryOptions.java

@@ -3739,7 +3739,7 @@ public interface BeforeSendLogCallback {
   public static final class Metrics {
 
     /** Whether Sentry Metrics feature is enabled and metrics are sent to Sentry. */
-    private boolean enable = false;
+    private boolean enable = true;
 
     /**
      * This function is called with a metric key and tags and can return false to skip sending the