Add XML documentation for Android.Media.TV.Interactive

The `Android.Media.TV.Interactive` namespace contains **293** `To be added` placeholders in source XML documentation (excluding `docs\xml\index.xml`).

Example command:

```powershell
rg -n -i --glob 'Android.Media.TV.Interactive/**' --glob 'ns-Android.Media.TV.Interactive.xml' 'to be added' docs\xml
```

## Update log

- 2026-09-10: Refreshed the placeholder scan from **287** to **293** (increased by **6**). Related documentation PRs: [#644](https://github.com/dotnet/android-api-docs/pull/644).

Start in docs\xml and use the provided rg command to locate the 293 `To be added` placeholders under Android.Media.TV.Interactive, excluding docs\xml\index.xml. Replace the placeholders with XML documentation for the namespace members; the work is done when the targeted scan no longer reports those placeholders.

Written by the indexing model from the issue text.