TagManager API - Workspaces: getStatus endpoint not returning any information for Custom Templates

#### Environment details

- OS: Windows 10
- Node.js version:
- npm version: 6.14.15
- `googleapis` version: ^95.0.0

#### Steps to reproduce

1. Call tagmanager.accounts.containers.workspaces.getStatus on a workspace which has outstanding template changes
2. workspaceChange array should have an object include both the changeStatus as well as an object containing the entity being changed under the name of that entity type
- `{ "changeStatus": "added", "tag": { "tagId": "1", "name": "Some Tag" } }`
3. Instead, custom templates only show a change status, but no specific entity
- `{ "changeStatus": "added" }`

Start by reproducing accounts.containers.workspaces.getStatus for a workspace with outstanding custom template changes and inspect the workspaceChange response. Done means the custom template entry includes both changeStatus and the changed entity, matching the behavior shown for other entity types.

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