Banner indicator in AppCenter different from the one in Applications Menu

### What Happened?

If you look at the indicators for banners in AppCenter, you'll see that they're a different style than the ones in the Applications Menu. For the one in AppCenter, the current indicator is bigger than the ones next to it, while in the Applications Menu they're all the same size. I think the one in AppCenter looks better.

### Steps to Reproduce

Open the Applications Menu and then the AppCenter and notice that they're different styles.

### Expected Behavior

That they would be the same consistent style.

### OS Version

6.x (Odin)

### Software Version

Latest release (I have run all updates)

### Log Output

```shell
n/a
```

### Hardware Info

n/a

Start by comparing the banner indicator rendering in the Applications Menu and AppCenter, using the screenshots and reproduction steps as the visual reference. Identify where each view defines its indicator style, then verify that the active and inactive indicators use one consistent appearance in both places.

Written by the indexing model from the issue text.