mark uncreatable Cluster objects in cluster-store as dead

- Display a special error for each of the currently 2 error types from
  loading the kubeconfig

- Special handling of dead clusters in proxy handler so that there are
  no unhandled promise rejections

Signed-off-by: Sebastian Malton <sebastian@malton.name>

extensions/telemetry/src/tracker.ts

@@ -9,7 +9,7 @@ import { comparer } from "mobx";
 export class Tracker extends Util.Singleton {
   static readonly GA_ID = "UA-159377374-1";
   static readonly SEGMENT_KEY = "YENwswyhlOgz8P7EFKUtIZ2MfON7Yxqb";
-  protected eventHandlers: Array<(ev: EventBus.AppEvent ) => void> = [];
+  protected eventHandlers: Array<(ev: EventBus.AppEvent) => void> = [];
   protected started = false;
   protected visitor: ua.Visitor;
   protected analytics: Analytics;
@@ -124,30 +124,28 @@ export class Tracker extends Util.Singleton {
   }
 
   protected resolveOS() {
-    let os = "";
     if (App.isMac) {
-      os = "MacOS";
-    } else if(App.isWindows) {
-      os = "Windows";
-    } else if (App.isLinux) {
-      os = "Linux";
-      if (App.isSnap) {
-        os += "; Snap";
-      } else {
-        os += "; AppImage";
-      }
-    } else {
-      os = "Unknown";
+      return "MacOS";
     }
-    return os;
+
+    if (App.isWindows) {
+      return "Windows";
+    }
+
+    if (App.isLinux) {
+      return `Linux; ${App.isSnap ? "Snap" : "AppImage"}`;
+    }
+
+    return "Unknown";
   }
 
   protected async event(eventCategory: string, eventAction: string, otherParams = {}) {
+    const allowed = await this.isTelemetryAllowed();
+    if (!allowed) {
+      return;
+    }
+
     try {
-      const allowed = await this.isTelemetryAllowed();
-      if (!allowed) {
-        return;
-      }
       this.visitor.event({
         ec: eventCategory,
         ea: eventAction,