🐛 plugin-explore: style broken

### Workspace

explore

### 📜 Description

Since the latest update, the style is broken.

- The height is super small
- The text is white, and it can't be read

### 👍 Expected behavior

- The height should fit the page, as it was before
- The text should be black

### 👎 Actual Behavior with Screenshots

### 👟 Reproduction steps

- Install `"@backstage-community/plugin-explore": "^1.0.0",`
- Create a custom page
```
export const CustomExplorePage = () => {
return (

);
};
```

### 📃 Provide the context for the Bug.

_No response_

### 👀 Have you spent some time to check if this bug has been raised before?

- [x] I checked and didn't find similar issue

### 🏢 Have you read the Code of Conduct?

- [x] I have read the [Code of Conduct](https://github.com/backstage/community-plugins/blob/main/CODE_OF_CONDUCT.md)

### Are you willing to submit PR?

No, I don't have time to work on this right now