feat: Clear flash messages during login (#2772)

* feat: Make the auth error message non-sticky in nature

---------

Co-authored-by: sohail-hashicorp <198640889+sohail-hashicorp@users.noreply.github.com>

ui/desktop/app/routes/scopes/scope/authenticate/method/oidc.js

@@ -70,7 +70,10 @@ export default class ScopesScopeAuthenticateMethodOidcRoute extends Route {
    * notified and returned to the index.
    */
   @action
-  @notifyError(() => 'errors.authentication-failed.title', { catch: true })
+  @notifyError(() => 'errors.authentication-failed.title', {
+    catch: true,
+    sticky: false,
+  })
   error(e) {
     this.router.transitionTo('scopes.scope.authenticate.method.index');
     // rethrow the error to activate the notifyError decorator