Update Fenix initial_experiments.json based on the current first-run experiments in experimenter

app/src/main/res/raw/initial_experiments.json

@@ -1,64 +1,5 @@
 {
   "data": [
-    {
-      "schemaVersion": "1.12.0",
-      "slug": "android-onboarding-redesign",
-      "id": "android-onboarding-redesign",
-      "arguments": {},
-      "application": "org.mozilla.firefox_beta",
-      "appName": "fenix",
-      "appId": "org.mozilla.firefox_beta",
-      "channel": "beta",
-      "userFacingName": "[beta] Android Onboarding Redesign",
-      "userFacingDescription": "Testing a new onboarding experience.",
-      "isEnrollmentPaused": false,
-      "isRollout": false,
-      "bucketConfig": {
-        "randomizationUnit": "nimbus_id",
-        "namespace": "fenix-juno-onboarding-beta-1",
-        "start": 0,
-        "count": 10000,
-        "total": 10000
-      },
-      "featureIds": [
-        "juno-onboarding"
-      ],
-      "probeSets": [],
-      "outcomes": [],
-      "branches": [
-        {
-          "slug": "control",
-          "ratio": 1,
-          "feature": {
-            "featureId": "juno-onboarding",
-            "enabled": true,
-            "value": {
-              "enabled": false
-            }
-          }
-        },
-        {
-          "slug": "treatment-a",
-          "ratio": 1,
-          "feature": {
-            "featureId": "juno-onboarding",
-            "enabled": true,
-            "value": {
-              "enabled": true
-            }
-          }
-        }
-      ],
-      "targeting": "((is_already_enrolled) || ((isFirstRun == 'true') && (app_version|versionCompare('112.!') >= 0)))",
-      "startDate": "2023-04-04",
-      "enrollmentEndDate": "2023-04-11",
-      "endDate": null,
-      "proposedDuration": 7,
-      "proposedEnrollment": 7,
-      "referenceBranch": "control",
-      "featureValidationOptOut": false,
-      "localizations": null
-    },
     {
       "schemaVersion": "1.12.0",
       "slug": "fx-release-android-re-engagement-notifications-114-rollout",
@@ -192,7 +133,7 @@
       "channel": "release",
       "userFacingName": "[release] Android Onboarding Redesign",
       "userFacingDescription": "Testing a new onboarding experience.",
-      "isEnrollmentPaused": false,
+      "isEnrollmentPaused": true,
       "isRollout": false,
       "bucketConfig": {
         "randomizationUnit": "nimbus_id",