Backed out 5 changesets (bug 1920562) for causing xpc assertion failures. CLOSED TREE

Backed out changeset 8f085ab589a8 (bug 1920562)
Backed out changeset 4405387ae770 (bug 1920562)
Backed out changeset a68fd13a33ae (bug 1920562)
Backed out changeset cd3672fc08ed (bug 1920562)
Backed out changeset 62ab18879eea (bug 1920562)

browser/components/BrowserContentHandler.sys.mjs

@@ -1346,6 +1346,10 @@ nsDefaultCommandLineHandler.prototype = {
           }
 
           if (notificationData?.privilegedName) {
+            Services.telemetry.setEventRecordingEnabled(
+              "browser.launched_to_handle",
+              true
+            );
             Glean.browserLaunchedToHandle.systemNotification.record({
               name: notificationData.privilegedName,
             });