Back out "remove the edenfs_events rollout gate"

Summary:
Original commit changeset: 45ad8c48dd55

Original Phabricator Diff: D115244136

Reviewed By: MichaelCuevas

Differential Revision: D116658774

fbshipit-source-id: 4c10b566f93f8cdb1c6f9aab8375a30220049c6d

Author: vilatto

eden/fs/config/EdenConfig.h

@@ -1617,6 +1617,14 @@ class EdenConfig : private ConfigSettingManager {
                         : std::chrono::seconds{45},
       this};
 
+  /**
+   * Whether to enable XplatLogger for edenfs_events telemetry.
+   */
+  ConfigSetting<bool> enableXplatLoggerEvents{
+      "telemetry:enable-xplatlogger-events",
+      false,
+      this};
+
   /**
    * Whether to enable XplatLogger for edenfs_errors telemetry. When enabled,
    * structured errors are routed through XplatLogger to the