fix: allow either platform org or non-platform org

[linear]

Problem

Bailey reported customer issue where customer was on teams + platform plan but then switched to organizations plan via setttings/organizations/new the platform account was not working anymore:

Solution

As discussed in Slack thread:

1. For organizations customer don't allow creating platform via settings/platform/new
2. For platform customer don't allow creating organization via settings/organizations/new

Implementation

1. Update organizations/new/create-new-view.tsx to check if logged in user is platform user and if so show error message:

2. Update platform/new/create-new-view.tsx to check if logged in user is not platform user but is part of org and if so show error message:

[linear]

CAL-5660 fix: stripe subscription