Document all known incompatibilities

[andygrove]

What is the problem the feature request solves?

We want to make sure that we address all (currently) known expression compatibility issues in one of the following ways:

1. Fix the compatibility issue, or
2. Disable the expression by default but allow the user to enable it if they are ok with the incompatibility, or
3. Accept that we can't fix it in time and add documentation about the incompatibility

By taking these steps, we empower our users to make an informed decision about enabling Comet (or not) for their production workflows.

At the time of writing, we have around 25 open bugs that we should review and decide on the action to take for each one.

Describe the potential solution

No response

Additional context

No response