Changelog view or Breaking Change Message

[jgomez720]

As we discussed in the post mortem, users had no visibility of the circle breaking change. This could be through

• alert
• error message on the code that broke. (error message on circle that has an is-was once the user hovers over it)

@jgomez720 to create an email template for these breaking changes in the future in hubspot (very needed after 1.0)
https://github.com/KittyCAD/pet-store/issues/187

@jessfraz reassign to those you need

[franknoirot]

Here is the description I put in #3996 before I realized it was duplicate:

We recently shipped a purposeful breaking change in KCL with #3860. However, because we didn't even have a updater toast at the time (we do now with #3902), users never got a chance to see the changelog let alone get a sense of it being serious. They just saw their existing code with circle in it all break.

Now that we have an updater toast, we want to start making it possible to tune the loudness of the messaging in that notification so that users see breaking changes coming.

My initial simple proposal is that we add the full changelog back into this toast within a collapsible disclosure. If the changelog's contents have the term "breaking" in them, we set this disclosure to open by default, but otherwise we default it to closed.