[Documentation] `@ember/controller` and `Controller` are missing from 4.8 and 4.9 API docs

[pgengler]

📙 Describe the Issue

The API documentation for @ember/controller is missing when version 4.8 or 4.9 is selected on https://api.emberjs.com

🔬 Minimal Reproduction

Visit https://api.emberjs.com/ember/release. Observe that @ember/controller is not listed under the "Packages" section, nor is Controller listed under "Classes".
Change the version to 4.7. Observe that @ember/controller is listed under "Packages" and Controller under "Classes".

😕 Actual Behavior

When the selected version is 4.8 or 4.9,@ember/controller is not listed under the "Packages" section, nor is Controller listed under "Classes".

🤔 Expected Behavior

@ember/controller is listed under "Packages" and Controller under "Classes".

➕ Additional Context

Attempting to edit the URL manually to change the version to 4.8 or 4.9 (e.g., https://api.emberjs.com/ember/4.9/modules/@ember%2Fcontroller) gives a 404 error.

[bertdeblock]

I think #20346 should fix the @ember/controller part.

[johanrd]

@bertdeblock still reproducible for the range 4.8–4.11 it seems:

see #21106 for a bacport to LTS 4.8 (at least)