[Bug]: The "add folder" button is not reachable from keyboard

### ⚠️ Before submitting, please verify the following: ⚠️

- [X] This is a **bug**, not a question or a configuration issue.
- [X] This issue is **not** already reported on Github (I've searched it).
- [X] Nextcloud Server and Desktop Client are **up to date**. See [Server Maintenance and Release Schedule](https://github.com/nextcloud/server/wiki/Maintenance-and-Release-Schedule) and [Desktop Releases](https://nextcloud.com/install/#install-clients) for supported versions.
- [X] I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/)

### Bug description

The "add folder" button which is present under list of folders is not accessible from the keyboard.

### Steps to reproduce

1. Go to the account settings and to the window where there is list of synced folders.
2. keep pressing the TAB key
3. notice that the focus will never reach the "add" button

### Expected behavior

I expect to reach the button by pressing the TAB key.When clicking on the share dialog, share by e-mail should be an option.
...

### Which files are affected by this bug

none

### Operating system

Linux

### Which version of the operating system you are running.

Arch Linux, Fedora 38

### Package

Distro package manager

### Nextcloud Server version

26 but I guess it does not matter

### Nextcloud Desktop Client version

3.10

### Is this bug present after an update or on a fresh install?

Updated from a minor version (ex. 3.4.2 to 3.4.4)

### Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

### Are you using an external user-backend?

- [X] Default internal user-backend
- [ ] LDAP/ Active Directory
- [ ] SSO - SAML
- [ ] Other

### Nextcloud Server logs

_No response_

### Additional info

_No response_