z-index of client handler overview window overlaps "modal-like component"

# Description
https://github.com/deep-foundation/deepcase-app/assets/66206278/2ffdeee2-4b24-4b94-851b-6b72e372dba0

# Client handler code to reproduce
```tsx
async ({ deep }) => {
const React = await deep.import('react');
const { useState } = React;
const MUI = await deep.import('@mui/material');
const { ThemeProvider, createTheme, Select, THEME_ID, Paper, FormControl, MenuItem, InputLabel } = MUI;

return () => {
const [selectedModelLinkId, setSelectedModelLinkId] = useState('');

const handleModelChange = (event) => {
setSelectedModelLinkId(event.target.value);
};

const theme = createTheme({
palette: {
mode: 'dark',
},
})

return (



ChatGPT Model ID

Ten
Twenty
Thirty

);
};
};

```

# Additional Info
This also happens with `Popper`
This also happens with `FinderPopover`

https://github.com/deep-foundation/deepcase-app/assets/66206278/a1cb7c31-ed2d-4a25-93b3-b732d114fdfb