[BUG] Mgt.dev playground is broken

[Nikkoro]

Describe the bug
After #3488 the playground website is not working.

To Reproduce
Steps to reproduce the behavior:

1. Go to mgt.dev
2. Click on eg mgt-person-card
3. See error
   Failed to fetch
   Expected behavior
   A preview of components.

Screenshots

Environment (please complete the following information):

• OS: WIN11
• Browser [e.g. edge, chrome, safari]: edge
• Framework [e.g. react, vue, none]: none
• Context [e.g. Microsoft Teams, SharePoint, Office Add-ins, Web]: playground
• Version [e.g. 0.1]: v4.6.0
• Provider [e.g. Msal2Provider] (bonus if you share the provider config): -

Additional context
I used to be able to preview the components, now none of them load due to CSP.

[gavinbarron]

The playground has been retired