[BUG] Main Activity not found
**Describe the bug**
I set my mainActivity to the activity which starts my Nvidia Shield. But the plugin switches to my "Fernsehen" activity when it starts.


**Expected behavior**
When activating my device with Siri or the Home App it should start my "SHIELD TV" activity and not my "Fernsehen" activity.

**Screenshots**
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**IOS (please complete the following information):**
- Version iOS 14 beta 4
- Device: iPhone X

**Logs**
[8/12/2020, 03:01:36] [Harmony] (Harmony)INFO - configuring Main TV Service
[8/12/2020, 03:01:36] [Harmony] (Harmony)WARNING - No main Activity that match config file found, default to first one
[8/12/2020, 03:01:36] [Harmony] (Harmony)INFO - Configuring Main Activity Fernsehen

**Config**
        {
            "name": "Harmony",
            "hubIP": "192.168.178.36",
            "platform": "HarmonyHubWebSocket",
            "mainActivity": "SHIELD TV"
        },

**Additional context**
Add any other context about the problem here.