Unlabeled buttons on screen reader

### Current Behavior

Hi, some unlabeled buttons like start a discussion button and publish post/discussion button after the title and after the recording field, these buttons are not labeled. What file can I edit to fix these issues until an official fix comes out? I'm using NVDA screen reader on the computer with windows, but the behavior is the same for google talkback on android. I'm using the latest version of Flarum

### Steps to Reproduce

1. activate the screen reader.
2. open the google chrome
3. go to the main page before the categories/tags button and start a discussion, this button is also unlabeled
4. click and the publish button is also without a label

### Expected Behavior
The screen reader can perfectly read the buttons on Google Chrome

### Screenshots

_No response_

### Environment

- Flarum version: 1.8.7PHP
- Website URL: https://forum.eternal-legend.com.br
- Webserver: 8.1.2-1ubuntu2.19MySQL
- Hosting environment: [ vps]
- PHP version: 8.2.24
- Browser: [Chrome latest version]

### Output of `php flarum info`

```
Output of "php flarum info", run this in terminal in your Flarum directory.
```

### Possible Solution

Add the label element to the button

### Additional Context

en microsoft edge, works perfectly and is read successfully... so the bug for now is only in the google chrome, edge does not present accessibility problems