chore: Simplify the call to attachAbrManager when allowMakeAbrManager is false (#8834)

Author: avelad

lib/player.js

@@ -2095,8 +2095,6 @@ shaka.Player = class extends shaka.util.FakeEventTarget {
       }
       preloadManager.attachManifest(
           this.manifest_, this.parser_, this.parserFactory_);
-      preloadManager.attachAbrManager(
-          this.abrManager_, this.abrManagerFactory_);
       preloadManager.attachAdaptationSetCriteria(
           this.currentAdaptationSetCriteria_);
       preloadManager.start();
@@ -2472,6 +2470,10 @@ shaka.Player = class extends shaka.util.FakeEventTarget {
     };
     preloadManager = new shaka.media.PreloadManager(
         assetUri, mimeType, startTime, playerInterface);
+    if (!allowMakeAbrManager) {
+      preloadManager.attachAbrManager(
+          this.abrManager_, this.abrManagerFactory_);
+    }
     return preloadManager;
   }