Unstable indentation calcultation

[drupol]

Hello,

When running typstfmt on this snippet:

#focus-slide[
  #fit-to-height(3em)[Introduction]

  #pdfpc.speaker-note(```
    Let's start the introduction with a quote from Foo Bar
  ```)
]

the resulting output is:

#focus-slide[
  #fit-to-height(3em)[Introduction]

  #pdfpc.speaker-note(```
      Let's start the introduction with a quote from Ken Thompson
    ```)
]

I believe that there's an issue in the #pdfpc.speaker-note handling.
Also, when running multiple times the formatter on that example, the indentation never stops growing, after a couple of times, it become:

#focus-slide[
  #fit-to-height(3em)[Introduction]

  #pdfpc.speaker-note(```
                    Let's start the introduction with a quote from Ken Thompson
                  ```)
]

[astrale-sharp]

Thanks a lot for the report!
I'll investigate !

[astrale-sharp]

This is a hard problem to solve right now.

format_content_blocks adds an indent to everything inside a content block and since it still valid spaces for the raw block, it "absorbs" them.

A temporary solution could be to disable indenting inside markup blocks (possibly only if it contains raw text!

I went ahead and implemented this temporary solution here 6974e5d, ideally, the program could be smart enough to only indent where there is no raw text