Improve accessibility of Welcome widget

### What Happened?

The welcome widget has several accessibility issues that I’ve come across in < 1 minute of testing with the screen reader (longer testing may reveal others):

- The first button is focused, which leads to its description text being read as the first and only thing when the Welcome screen is displayed. (Its title and description are not read.)
- Only the description text of the button is read, not the option text, which is the actual button label.

### Steps to Reproduce

1. Turn on the screen reader
2. Run an app that has a window with the Welcome widget

### Expected Behavior

The Welcome view should be accessible

### OS Version

6.x (Odin)

### Software Version

Latest release (I have run all updates)

### Log Output

```shell
n/a
```

### Hardware Info

n/a