fix(Ads): Don't load useless segments when using playoutLimit on inte…

…rstitial ads (#7469)

lib/ads/interstitial_ad_manager.js

@@ -674,12 +674,13 @@ shaka.ads.InterstitialAdManager = class {
       }
     });
     try {
+      this.updatePlayerConfig_();
       if (interstitial.playoutLimit) {
         playoutLimitTimer = new shaka.util.Timer(() => {
           ad.skip();
         }).tickAfter(interstitial.playoutLimit);
+        this.player_.configure('playRangeEnd', interstitial.playoutLimit);
       }
-      this.updatePlayerConfig_();
       await this.player_.attach(this.video_);
       if (this.preloadManagerInterstitials_.has(interstitial)) {
         const preloadManager =
@@ -693,6 +694,14 @@ shaka.ads.InterstitialAdManager = class {
       } else {
         await this.player_.load(interstitial.uri);
       }
+      if (interstitial.playoutLimit) {
+        if (playoutLimitTimer) {
+          playoutLimitTimer.stop();
+        }
+        playoutLimitTimer = new shaka.util.Timer(() => {
+          ad.skip();
+        }).tickAfter(interstitial.playoutLimit);
+      }
       const loadTime = (Date.now() - startTime) / 1000;
       this.onEvent_(new shaka.util.FakeEvent(shaka.ads.Utils.ADS_LOADED,
           (new Map()).set('loadTime', loadTime)));