Default CA duration chart FF to true

changelogs/unreleased/36675-add-median-line-to-cycle-analytics-duration-chart.yml

+---
+title: Add cycle analytics duration chart with median line
+merge_request: 23971
+author:
+type: added

doc/user/analytics/cycle_analytics.md

@@ -172,16 +172,23 @@ For example, if 30 days worth of data has been selected (for example, 2019-12-16
 median line will represent the previous 30 days worth of data (2019-11-16 to 2019-12-16)
 as a metric to compare against.
 
-### Enabling chart
+### Disabling chart
 
-By default, this chart is disabled for self-managed instances. To enable it, ask an
-administrator with Rails console access to run the following:
+This chart is enabled by default. If you have a self-managed instance, an
+administrator can open a Rails console and disable it with the following command:
 
 ```ruby
-Feature.enable(:cycle_analytics_scatterplot_enabled)
+Feature.disable(:cycle_analytics_scatterplot_enabled)
 ```
 
-This chart is enabled by default on GitLab.com.
+### Disabling chart median line
+
+This chart median line is enabled by default. If you have a self-managed instance, an
+administrator can open a Rails console and disable it with the following command:
+
+```ruby
+Feature.disable(:cycle_analytics_scatterplot_median_enabled)
+```
 
 ## Permissions
 

ee/app/controllers/analytics/cycle_analytics_controller.rb

@@ -6,8 +6,8 @@ class Analytics::CycleAnalyticsController < Analytics::ApplicationController
 
   before_action do
     push_frontend_feature_flag(:customizable_cycle_analytics)
-    push_frontend_feature_flag(:cycle_analytics_scatterplot_enabled)
-    push_frontend_feature_flag(:cycle_analytics_scatterplot_median_enabled)
+    push_frontend_feature_flag(:cycle_analytics_scatterplot_enabled, default_enabled: true)
+    push_frontend_feature_flag(:cycle_analytics_scatterplot_median_enabled, default_enabled: true)
     push_frontend_feature_flag(:tasks_by_type_chart)
   end
 end