Add new interactive media ad type to sidenav

### Page URL

sidenav.yml

### Page source

_No response_

### Describe the problem

s/w issue:  https://github.com/flutter/packages/pull/6060.

As it says


### Expected fix

Add a link to the package.

### Additional context

_No response_

### I would like to fix this problem.

- [ ] I will try and fix this problem on docs.flutter.dev.