Why nested file extension does not work in tmLnaguage file types match in Visual Studio?

Question

As you can see in Visual Studio Ansible Extension Project we have tmLanguage for Ansible grammar that file type match with below

        <key>fileTypes</key>
        <array>
            <string>ansible.yaml</string>
            <string>ansible</string>
        </array>

But all files with ansible extension (for example Test.ansible) work correctly, but all files with ansible.yaml extension (for example Test.ansbile.yaml) do not work correctly

How can I resovle this?

I request sample in https://github.com/microsoft/VSSDK-Extensibility-Samples/issues/280#issue-1589679735