### Bug description

when trying to nest mermaid diagrams in tabsets, diagrams beyond the first one are cut off:

![image](https://user-images.githubusercontent.com/12927842/230942638-974332c7-b3f9-478f-9150-ecad12d1c00d.png)



````md
---
title: mermaid tabsets
---

::: {.panel-tabset}

## first mermaid

```{mermaid}
flowchart TD
one---two
```

## second mermaid

```{mermaid}
flowchart TD
three---four
```

## third mermaid

```{mermaid}
flowchart TD
five---six
```

:::


## level two


::: {.panel-tabset}

### first mermaid

```{mermaid}
flowchart TD
one---two
```

### second mermaid

```{mermaid}
flowchart TD
three---four
```

### third mermaid

```{mermaid}
flowchart TD
five---six
```

:::

````


quarto check:
```
❯ quarto check

[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.1: OK
      Dart Sass version 1.55.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.3.313
      Path: /Users/edavidaja/.local/share/qvm/versions/v1.3.313/bin

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.8.6
      Path: /Users/edavidaja/.pyenv/versions/3.8.6/bin/python3
      Jupyter: (None)

      Jupyter is not available in this Python installation.
      Install with python3 -m pip install jupyter

[✓] Checking R installation...........OK
      Version: 4.2.0
      Path: /Library/Frameworks/R.framework/Versions/4.2/Resources
      LibPaths:
        - /Users/edavidaja/Library/R/x86_64/4.2/library
        - /Library/Frameworks/R.framework/Versions/4.2/Resources/library
      knitr: 1.42
      rmarkdown: 2.20

[✓] Checking Knitr engine render......OK
```

### Checklist

- [X] Please include a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
- [X] Please [format your issue](https://quarto.org/bug-reports.html#formatting-make-githubs-markdown-work-for-us) so it is easier for us to read the bug report.
- [ ] Please document the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
- [X] Please document the operating system you're running. If on Linux, please provide the specific distribution.
- [X] Please provide the output of `quarto check` so we know which version of quarto and its dependencies you're running.
cscheid
2023-04-10T16:09:06Z
edavidaja
bug mermaid
v1.4
open
mermaid blocks cannot be tabset
https://github.com/quarto-dev/quarto-cli/issues/5145