Support author roles in default template

Bug description

When you create a brand new Manuscript project, Quarto creates an article with Norah Jones author and roles: writing.
But when I render with keep-typ: true and check the code, I get:

...
authors: (
    ( name: [Norah Jones],
      affiliation: [The University],
      email: [] ),
    ),...

I tried to create a custom template and change typst-show.typ to:

...
$if(it.name.literal)$
    ( name: [$it.name.literal$],
      affiliation: [$for(it.affiliations)$$it.name$$sep$, $endfor$],
      roles: [$for(it.roless)$$it.name$$sep$, $endfor$],
      email: [$it.email$] ),
$endif$
...

But then I get ....

...
authors: (
    ( name: [Norah Jones],
      affiliation: [The University],
      email: [],
      roles: [] ),
    ),...

Steps to reproduce

1. create new Manuscript project
2. change format typst with keep-typ: true
3. quarto preview index.qmd
4. check index.typ

Expected behavior

...
authors: (
    ( name: [Norah Jones],
      affiliation: [The University],
      email: [],
      roles: [writing] ),
    ),...

Actual behavior

...
authors: (
    ( name: [Norah Jones],
      affiliation: [The University],
      email: [] ),
    ),...

Your environment

IDE: Positron, MacOS Sonoma 14.5

Quarto check output

❯ quarto check
Quarto 1.5.54
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.2.0: OK
      Dart Sass version 1.70.0: OK
      Deno version 1.41.0: OK
      Typst version 0.11.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.5.54
      Path: /Applications/quarto/bin

[✓] Checking tools....................OK
      TinyTeX: v2023.01
      Chromium: 869685

[✓] Checking LaTeX....................OK
      Using: TinyTex
      Path: /Users/fredguth/Library/TinyTeX/bin/universal-darwin
      Version: 2022

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

[✓] Checking Python 3 installation....OK
      Version: 3.12.4
      Path: /Users/fredguth/Code/sus/desid_pdf/.venv/bin/python3
      Jupyter: 5.7.2
      Kernels: python3, mojo-jupyter-kernel, fastduck

[✓] Checking Jupyter engine render....OK

[✓] Checking R installation...........OK
      Version: 4.4.1
      Path: /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources
      LibPaths:
        - /Users/fredguth/Library/R/arm64/4.4/library
        - /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/library
      knitr: 1.48
      rmarkdown: 2.27

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

Locate the default Manuscript template's typst-show.typ and inspect how author metadata is emitted when rendering index.qmd with Typst. Reproduce with keep-typ: true and check index.typ; done means the generated authors entry includes roles: [writing] for the default Norah Jones author.