Fix forgotten interface declaration change (#62)

* Fix application breaking on js interop error

Instead, it now catches the exception and stops tracking the connection.

* Change method signature for async method without await

* Remove unnecessary calls to base class initialization

* Remove unsubscription from initialization method

* Implement IDisposable and have unsubscribe occur there

* Change from OnInitializedAsync to OnIntialized

* Change IAnalytics interface for ConfigureGlobalEventData to be synchronous

* Remove accidental async addition in interface

src/Blazor.Analytics/Abstractions/IAnalytics.cs

@@ -6,7 +6,7 @@ namespace Blazor.Analytics
     public interface IAnalytics
     {
         Task ConfigureGlobalConfigData(Dictionary<string, object> globalConfigData);
-        Task ConfigureGlobalEventData(Dictionary<string, object> globalEventData);
+        void ConfigureGlobalEventData(Dictionary<string, object> globalEventData);
 
         Task TrackNavigation(string uri);