Add X-Databricks-Org-Id header to hand-written extensions for SPOG hosts

[simonfaltum]

Why

databricks bundle deploy fails on SPOG hosts with "Unable to load OAuth Config" errors when using hand-written extension methods that make direct _api.do() calls. These methods bypass the generated code path that includes the X-Databricks-Org-Id header required for SPOG routing.

The generated service methods already include this header per-call, but the hand-written mixins were missing it.

Linked Go SDK PR: databricks/databricks-sdk-go#1634

Changes

Added the X-Databricks-Org-Id header (when workspace_id is configured) to the following hand-written mixin methods:

• WorkspaceExt.upload() in mixins/workspace.py
• WorkspaceExt.download() in mixins/workspace.py
• SharesExt.list() in mixins/sharing.py
• ServingEndpointsExt.http_request() in mixins/open_ai_client.py

Uses the same pattern as generated code:

cfg = self._api._cfg
if cfg.workspace_id:
    headers["X-Databricks-Org-Id"] = cfg.workspace_id

Test plan

• python -c "from databricks.sdk.mixins.workspace import WorkspaceExt" passes
• All modified files import cleanly

This pull request was AI-assisted by Isaac.

[github-actions]

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Inputs:

• PR number: 1389
• Commit SHA: 19d0b6a3c06a25f2452a8a710134f44417784355

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