fix/FEC-13956: add window before window.MediaSource (#780)

### Description of the Changes

Please add a detailed description of the change, whether it's an
enhancement or a bugfix.
If the PR is related to an open issue please link to it.

**Issue:**

**Fix:**

#### Resolves FEC-[Please add the ticket reference here]

package.json

@@ -50,7 +50,7 @@
     "precommit": "yarn run build && yarn run type-check && yarn run test && yarn run lint"
   },
   "dependencies": {
-    "@playkit-js/playkit-js": "0.84.8",
+    "@playkit-js/playkit-js": "0.84.9-patch.0-e6a9f6c",
     "@playkit-js/playkit-js-dash": "1.37.0",
     "@playkit-js/playkit-js-hls": "1.32.11",
     "@playkit-js/playkit-js-providers": "2.40.6",

yarn.lock

@@ -1197,10 +1197,10 @@
     react-redux "7.2.1"
     redux "4.0.5"
 
-"@playkit-js/[email protected].8":
-  version "0.84.8"
-  resolved "https://registry.yarnpkg.com/@playkit-js/playkit-js/-/playkit-js-0.84.8.tgz#0c394e1882dc111536a996739fe5299e5244dbbf"
-  integrity sha512-9hrmyDWQ6htB0lWIM8g3PAUyDhqAPsVJLQz0tCAIzikidEYiRZmz5JavkdxdWVoHGovw2k7Pk4Qs96xqrgCH8w==
+"@playkit-js/[email protected].9-patch.0-e6a9f6c":
+  version "0.84.9-patch.0-e6a9f6c"
+  resolved "https://registry.yarnpkg.com/@playkit-js/playkit-js/-/playkit-js-0.84.9-patch.0-e6a9f6c.tgz#5e402d738c99990eb3b267aa9c083b6471716a49"
+  integrity sha512-vwXIvQO00rJvU5z4KpyUU6Tad1KN50ehebV5d0r74lA0aFwAa8B9HG06ELuyNZcfjqlWfQiFmUzYmpysSs8Z7g==
   dependencies:
     js-logger "^1.6.0"
     ua-parser-js "^1.0.36"