fix propagation of WrongSwarmError in pollForAllKeys()

ts/session/snode_api/swarmPolling.ts

@@ -208,10 +208,14 @@ export class SwarmPolling {
     const groupPromises = this.groupPubkeys.map(async pk => {
       return this.pollOnceForKey(pk, true);
     });
+    // if a WrongSwarmError has been triggered, we have to forward it (and in fact we must forward any errors)
+    // but, we also need to make sure the next pollForAllKeys runs no matter if an error is triggered or not
+    // the finally here will be invoked even if the catch is throwing an exception
     try {
       await Promise.all(_.concat(directPromises, groupPromises));
     } catch (e) {
       window.log.warn('pollForAllKeys swallowing exception: ', e);
+      throw e;
     } finally {
       setTimeout(this.pollForAllKeys.bind(this), 2000);
     }