Add XML documentation for Android.Views.Inspectors

The `Android.Views.Inspectors` namespace contains **79** `To be added` placeholders in source XML documentation (excluding `docs\xml\index.xml`).

```powershell
rg -n -i --glob 'Android.Views.Inspectors/**' --glob 'ns-Android.Views.Inspectors.xml' 'to be added' docs\xml
```

## Update log

- 2026-09-10: Refreshed the placeholder scan from **99** to **79** (reduced by **20**). Related documentation PRs: [#360](https://github.com/dotnet/android-api-docs/pull/360), [#430](https://github.com/dotnet/android-api-docs/pull/430), [#625](https://github.com/dotnet/android-api-docs/pull/625), [#644](https://github.com/dotnet/android-api-docs/pull/644).

Start with the docs\xml files under Android.Views.Inspectors and run the issue's rg command to locate the 79 remaining placeholders. Review each matching XML documentation entry and replace the placeholders with documentation for the listed APIs. Done means the scan finds no remaining "to be added" entries in this namespace, excluding docs\xml\index.xml.

Written by the indexing model from the issue text.