Folded code regions should not show region marker

[shaperilio]

Just started using region markers to fold chunks of code (Python). When folded, I see this:

This comes from code like this:

# region Example 1: blah blah blah

The region marker should be hidden when folded, so I just see the comment following it as the "title" of the region.

region is case sensitive so it's unsightly and inflexible, in my opinion.

[aeschli]

I thin it's fair to say that this is a duplicate of #83458,
depending on #70794