feat(workspace-users): exclude removed users by default

[scottlovegrove]

Summary

Port of Doist/twist-sdk-typescript#138 to comms-sdk.

• getWorkspaceUsers now excludes users with removed: true by default; pass includeRemoved: true to include them.
• The Comms API's workspace_users/get always returns removed users and exposes no override param, so the filtering happens client-side in the SDK.
• GetWorkspaceUsersArgs gains an optional includeRemoved?: boolean (defaults to false).

Difference from the twist PR

twist-sdk applies the filter to both an awaited path and a batch-descriptor path (via a new transform hook on BatchRequestDescriptor). comms-sdk has no batch pattern, so the filter applies only to the awaited call — no batch plumbing needed.

Test plan

• excludes removed users by default, and sends no include_removed / with_removed query param (proves client-side filtering)
• includeRemoved: true returns all users
• npm run type-check clean
• npm run check (oxlint + oxfmt) clean
• npm test — 128 pass (+2 new)

🤖 Generated with Claude Code

[doistbot]

This PR updates getWorkspaceUsers to filter out removed users client-side by default, smoothly porting the desired behavior from the Twist SDK. The implementation handles the API's lack of server-side filtering well while maintaining a clean interface with the new includeRemoved argument. A couple of minor adjustments were noted, specifically filtering the raw response data prior to Zod validation to reduce overhead, and adding query-parameter assertions to the tests to secure the intended wire contract.

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