StreamEventData typing is wrong

[eavanvalkenburg]

• Package Name: azure-ai-projects
• Package Version: 1.1.0b4
• Operating System: macos
• Python Version: 3.11

Describe the bug
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the union type:
StreamEventData = Union["MessageDeltaChunk", "ThreadMessage", ThreadRun, RunStep, str]
is missing RunStepDeltaChunk

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[github-actions]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @dargilco @glharper @howieleung @jhakulin @nick863 @trangevi.

[dargilco]

@eavanvalkenburg what version of azure-ai-agents do you have installed?

[eavanvalkenburg]

@dargilco 1.2.0b4 (I think)

[howieleung]

@eavanvalkenburg You are right. We should have added RunStepDeltaChunk to the Union type. Could you show me how you are using StreamEventData? I feel that it should be an internal class. I am thinking if I should fix in beta only.