Integrated browser doesn't pass cloudflare turnstile

[l3ochan]

Hi there,
I recently tried the Nextcloud Talk desktop client and I noticed that my users couldn't access the login page of the nextcloud instance because I have a cloudflare challenge that the browser needs to solve to access the nextcloud instance
When they try to access the nextcloud instance, they get the cloudflare loading screen then the captcha box appears and it displays "error" and they can't proceed to login.
This doesn't happen on a browser or on the mobile apps, making this issue specific to the browser implementation of the Desktop Talk client.

To reproduce:

1. Setup a nextcloud instance behind cloudflare's reverse proxy with a WAF that verifies the user's browser
2. Install the Desktop talk client
3. Open the desktop talk client and input your server address and click on the button to proceed
4. You'll see the browser opening and the challenge fails.

[ShGKme]

• Will be fixed via Add log in via web-browser (Login flow v2) #61