[python] Add Python mock API test for Azure Core Page withRelativeNextLink scenario

[Copilot]

Adds Python SDK test coverage for the new Azure_Core_Page_withRelativeNextLink Spector scenario from Azure/typespec-azure#3922, which tests pagination with relative nextLink URLs that clients must resolve against the service endpoint.

• Dependency bump: @azure-tools/azure-http-specs → 0.1.0-alpha.38-dev.2 to pick up the new scenario
• Sync test: test_list_with_relative_next_link in test_azure_core_page.py
• Async test: test_list_with_relative_next_link in test_azure_core_page_async.py
• Changelog: internal change entry for @typespec/http-client-python

Both tests paginate across two pages and assert id, name, and etag for each returned User:

def test_list_with_relative_next_link(client: PageClient):
    result = list(client.with_relative_next_link())
    assert len(result) == 2
    assert result[0].id == 1
    assert result[0].name == "User1"
    assert result[1].id == 2
    assert result[1].name == "User2"

Warning

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• https://api.github.com/repos/Azure/typespec-azure/pulls/3922
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If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
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[azure-sdk]

You can try these changes here

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[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/microsoft/typespec/@typespec/http@9685

npm i https://pkg.pr.new/microsoft/typespec/@typespec/http-client@9685

commit: 770f3a2

[github-actions]

All changed packages have been documented.

• ✅ @typespec/http-client-python

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@typespec/http-client-python - internal ✏️

Add mock API test for Azure Core Page withRelativeNextLink scenario.