For #4063 - Always enable the push service (#4932)

app/src/main/java/org/mozilla/fenix/FenixApplication.kt

@@ -66,6 +66,8 @@ open class FenixApplication : Application() {
             return
         }
 
+        setupPush()
+
         // Make sure the engine is initialized and ready to use.
         components.core.engine.warmUp()
 
@@ -181,6 +183,13 @@ open class FenixApplication : Application() {
         }
     }
 
+    private fun setupPush() {
+        components
+            .backgroundServices
+            .push
+            .initialize()
+    }
+
     private fun setupCrashReporting() {
         components
             .analytics

app/src/main/java/org/mozilla/fenix/components/BackgroundServices.kt

@@ -137,8 +137,6 @@ class BackgroundServices(
      */
     private val accountObserver = object : AccountObserver {
         override fun onLoggedOut() {
-            pushService.stop()
-
             push.unsubscribeForType(PushType.Services)
 
             context.components.analytics.metrics.track(Event.SyncAuthSignOut)
@@ -147,8 +145,6 @@ class BackgroundServices(
         }
 
         override fun onAuthenticated(account: OAuthAccount, newAccount: Boolean) {
-            pushService.start(context)
-
             if (newAccount) {
                 context.components.analytics.metrics.track(Event.FXANewSignup)
                 push.subscribeForType(PushType.Services)