[fenix] No Issue: Move notification manager to member of background services

Instead of taking notification manager as a parameter
(from the utils class), create one private to the
BackgroundServices class. This means that we do not need
to create the entirety of utilities just to use
the notification manager.

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

@@ -48,8 +48,7 @@ import org.mozilla.fenix.test.Mockable
 class BackgroundServices(
     context: Context,
     historyStorage: PlacesHistoryStorage,
-    bookmarkStorage: PlacesBookmarksStorage,
-    notificationManager: NotificationManager
+    bookmarkStorage: PlacesBookmarksStorage
 ) {
     companion object {
         const val CLIENT_ID = "a2270f727f45f648"
@@ -234,4 +233,11 @@ class BackgroundServices(
         }
         CoroutineScope(Dispatchers.Main).launch { it.initAsync().await() }
     }
+
+    /**
+     * Provides notification functionality, manages notification channels.
+     */
+    val notificationManager by lazy {
+        NotificationManager(context)
+    }
 }

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

@@ -13,7 +13,7 @@ import org.mozilla.fenix.test.Mockable
 @Mockable
 class Components(private val context: Context) {
     val backgroundServices by lazy {
-        BackgroundServices(context, core.historyStorage, core.bookmarksStorage, utils.notificationManager)
+        BackgroundServices(context, core.historyStorage, core.bookmarksStorage)
     }
     val services by lazy { Services(backgroundServices.accountManager) }
     val core by lazy { Core(context) }

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

@@ -39,12 +39,5 @@ class Utilities(
         CustomTabIntentProcessor(sessionManager, sessionUseCases.loadUrl, context.resources)
     }
 
-    /**
-     * Provides notification functionality, manages notification channels.
-     */
-    val notificationManager by lazy {
-        NotificationManager(context)
-    }
-
     val publicSuffixList by lazy { PublicSuffixList(context) }
 }