fix: Do not recognize MultiChoice & Ziggo as Apple (#7996)

Backported to v4.9.x

Author: tykus160

lib/util/platform.js

@@ -307,13 +307,15 @@ shaka.util.Platform = class {
         !shaka.util.Platform.isTizen() &&
         !shaka.util.Platform.isEOS() &&
         !shaka.util.Platform.isAPL() &&
+        !shaka.util.Platform.isAPP() &&
         !shaka.util.Platform.isVirginMedia() &&
         !shaka.util.Platform.isOrange() &&
         !shaka.util.Platform.isPS4() &&
         !shaka.util.Platform.isAmazonFireTV() &&
         !shaka.util.Platform.isComcastX1() &&
         !shaka.util.Platform.isZenterio() &&
-        !shaka.util.Platform.isSkyQ();
+        !shaka.util.Platform.isSkyQ() &&
+        !shaka.util.Platform.isMultiChoice();
   }
 
   /**
@@ -391,6 +393,16 @@ shaka.util.Platform = class {
     return shaka.util.Platform.userAgentContains_('DT_STB_BCM');
   }
 
+  /**
+   * Check if the current platform is a MultiChoice STB.
+   * @return {boolean}
+   */
+  static isMultiChoice() {
+    // cspell: ignore MDMP
+    return shaka.util.Platform.userAgentContains_('MDMP1001S') ||
+      shaka.util.Platform.userAgentContains_('PS5525IMC');
+  }
+
   /**
    * Returns a major version number for Safari, or Safari-based iOS browsers.
    *
@@ -456,6 +468,14 @@ shaka.util.Platform = class {
     return shaka.util.Platform.userAgentContains_('PC=APL');
   }
 
+  /**
+   * Check if the current platform is an APPSTB set-top box.
+   * @return {boolean}
+   */
+  static isAPP() {
+    return shaka.util.Platform.userAgentContains_('PC=APPSTB');
+  }
+
   /**
    * Guesses if the platform is a mobile one (iOS or Android).
    *
@@ -548,7 +568,8 @@ shaka.util.Platform = class {
         Platform.isEOS() || Platform.isAPL() ||
         Platform.isVirginMedia() || Platform.isOrange() ||
         Platform.isComcastX1() || Platform.isChromecast() ||
-        Platform.isHisense() || Platform.isZenterio()) {
+        Platform.isHisense() || Platform.isZenterio() ||
+        Platform.isAPP() || Platform.isMultiChoice()) {
       return true;
     }
     return false;