web: Normalize client-side error handling (#13595)

web: Clean up error handling. Prep for permission checks.

- Add clearer reporting for API and network errors.
- Tidy error checking.
- Partial type safety for events.

web/src/common/helpers/plex.ts

@@ -1,5 +1,5 @@
 import { VERSION } from "@goauthentik/common/constants";
-import { SentryIgnoredError } from "@goauthentik/common/errors";
+import { SentryIgnoredError } from "@goauthentik/common/sentry";
 
 export interface PlexPinResponse {
     // Only has the fields we care about