Expansions page a11y update tasks Q2 FY25

### Overview
Expansions page a11y update tasks Q2 FY24

```[tasklist]
### Tasks
- [ ] Five aria label Errors (a11y 1.1.1)
```

### Version

UI 3.2.0

### Reproduction

## Five aria label Errors (a11y 1.1.1)
1. From Aerie pulldown select 'Expansion'.
2. Select the 'New' button to open the expansion editor. 
3. Run WAVE tool to see 5 Errors. 

### System Info

```shell
Chrome
```
