No UI feedback for pending registration when attempting to log in

[vallode]

Requirements

• [X] This is a bug report, and if not, please post to https://lemmy.ml/c/lemmy_support instead.
• [X] Please check to see if this issue already exists.
• [X] It's a single bug. Do not report multiple bugs in one issue.
• [X] It's a frontend issue, not a backend issue; Otherwise please create an issue on the backend repo instead.

Summary

If registration needs to be approved on an instance, attempting to log in before your registration is approved will result in the login button spinning for a moment and then stopping with no feedback. A 400 status network request shows that the login is denied with "registration_application_pending". This should show in the UI to remind the user to wait.

Steps to Reproduce

1. Register a new account on an approval-only instance (e.g https://lemmy.world/)
2. Attempt to log in before the registration is approved (e.g https://lemmy.world/login)
3. See no visual feedback for failed login

Technical Details

Browser: Firefox OS: Linux

Relevant console error:

XHRPOST
https://lemmy.world/api/v3/user/login
[HTTP/2 400  988ms]
error	"registration_application_pending"

Lemmy Instance Version

0.18.5

Lemmy Instance URL

https://lemmy.world/