Ps 1904 (#2439)

* Add self host notification launch settings

* Exclude current context from push for password updates

This is needed to allow the current context to process a key
rotation if one is being done.

Does not change any other call to `PushLogOut`.

* Revert inverted exclude logic

This exclude is referring to exempting the requesting client
from the notification push.

src/Notifications/Properties/launchSettings.json

@@ -22,6 +22,15 @@
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development"
       }
+    },
+    "Notifications-SelfHost": {
+      "commandName": "Project",
+      "launchBrowser": false,
+      "applicationUrl": "http://localhost:61841",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development",
+        "developSelfHosted": "true"
+      }
     }
   }
-}
+}