Embedding from Other Documents and Tabset panels

Bug description

I ran into this issue with a project and I tried reproducing it with just the basic Quarto manuscript project. Not sure if I have missed something in the documentation or whether this an actual bug, but decided to make a not of it.

Steps to reproduce

---
title: paneltest
authors:
  - name: Norah Jones
    affiliation: The University
    roles: writing
    corresponding: true
bibliography: references.bib
---

## Section

This is a simple placeholder for the manuscript's main document [@knuth84].

```{r}
1 + 1
```

{{< embed notebooks/nbsource.qmd#fig-mtcars >}}

Another embed but this time in panel

{{< embed notebooks/nbsource.qmd#fig-inpanel >}}

---
title: "Untitled"
editor: visual
---

```{r}
#| label: fig-mtcars

library(tidyverse)

ggplot(data = mtcars, aes(x = mpg)) +
  geom_histogram() +
  labs(x = "Miles Per Gallon (mpg)", y = "Count", title = "Distribution of MPG in mtcars")

```

::: panel-tabset
## Test

```{r}
#| label: fig-inpanel

library(tidyverse)

ggplot(data = mtcars, aes(x = mpg)) +
  geom_histogram() +
  labs(x = "Miles Per Gallon (mpg)", y = "Count", title = "Distribution of MPG in mtcars")

```

## not test

Some text
:::

Expected behavior

No response

Actual behavior

Rendering HTML preview [index.qmd]
ERROR: The cell fig-inpanel does not exist in notebook

Your environment

R Statistical language (version 4.2.2 on Windows 10 x64 (build 22631), R studio "Ocean Storm" Release (4da58325, 2024-01-28) for windows

Quarto check output

Quarto 1.4.549
[>] Checking versions of quarto binary dependencies...
Pandoc version 3.1.11: OK
Dart Sass version 1.69.5: OK
Deno version 1.37.2: OK
[>] Checking versions of quarto dependencies......OK
[>] Checking Quarto installation......OK
Version: 1.4.549
Path: C:\Users\X\AppData\Local\Programs\Quarto\bin
CodePage: 1252

[>] Checking tools....................OK
TinyTeX: v2024.02
Chromium: (not installed)

[>] Checking LaTeX....................OK
Using: TinyTex
Path: C:\Users\X\AppData\Roaming\TinyTeX\bin\windows
Version: 2023

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

[>] Checking Python 3 installation....OK
Version: 3.11.2
Path: C:/Users/X/AppData/Local/Programs/Python/Python311/python.exe
Jupyter: (None)

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

[>] Checking R installation...........OK
Version: 4.2.2
Path: C:/PROGRA1/R/R-421.2
LibPaths:
- C:/Users/X/AppData/Local/R/win-library/4.2
- C:/Program Files/R/R-4.2.2/library
knitr: 1.45
rmarkdown: 2.25

[>] Checking Knitr engine render......OK

Start with the embedded notebooks/nbsource.qmd example and render the basic Quarto manuscript as an HTML preview using the supplied R and panel-tabset content. Compare the standalone fig-mtcars embed with fig-inpanel; done means the panel-contained figure resolves instead of reporting that the cell does not exist in the notebook.