Release + Additional Commands do not Appear on Mapping Screen

### Is there an existing issue for this?

- [X] I searched the existing issues and did not find anything similar.

### Current Behavior

On the main mapping screen, if you insert a "release" tile with some other tiles, it will appear as "[NO KEY] instead of the full command sequence entered.

### Expected Behavior

It should show the full tile sequence

### Steps To Reproduce

1) Start with a fresh mapping screen
2) Enter for a particular button "Release (0.1s) | CTRL | ENTER"
3) Save the button config
4) Observe UI says "[NO BUTTON]" making it difficult to tell at a glance if button is actually set or not.

### Environment

```markdown
Program Version 3.3.3
Program Compiled on Feb 3 2023 at 18:28:32
Built Against SDL 2.26.2
Running With SDL 2.26.4
Using Qt 5.15.8
Using Event Handler: XTest
Compositor type: x11
Host OS: manjaro Version: unknown Architecture: x86_64
```

### Anything else?

Image of happening: https://imgur.com/a/fEkkZFn