Company like header comments like #--- get formatted to something very different

Describe the bug

Company like comment headers get formatted from

#------------------------------------------------------------------------------
# Description : FOO
# Copyright (C) BAR COMPANY (2023)
#------------------------------------------------------------------------------

to

--- #------------------------------------------------------------------------------

#------------------------------------------------------------------------------
# Description : FOO
# Copyright (C) BAR COMPANY (2023)

Expected Behavior

I would expect it to remain the same, ie not be reformatted. Ie look like:

#------------------------------------------------------------------------------
# Description : FOO
# Copyright (C) BAR COMPANY (2023)
#------------------------------------------------------------------------------

Current Behavior

Got reformatted to

--- #------------------------------------------------------------------------------

#------------------------------------------------------------------------------
# Description : FOO
# Copyright (C) BAR COMPANY (2023)

Steps to Reproduce

1. create a empty yaml file with any content
2. add #--- (minimum of 3 dashes after # at the top of the file (first line)
3. on vscode save to reformat
4. see that it reformatted to something like (added a newline with --- before the original line)

---
#---

Environment

• Windows
• Mac
• Linux
• other (please specify)

Reproduce this in an empty YAML file using the VS Code formatter, starting with a first-line comment containing at least three dashes after #. Trace the YAML formatting entry point that adds the document marker and newline, then verify that the company-style header remains unchanged after formatting.