[core] fix PinExistingReturnObject segfault by passing owner_address

[hongchaodeng]

Why are these changes needed?

When worker crash-restarts, there is a chance that it would call PinExistingReturnObject() to pin existing objects. But PinExistingReturnObject() calls GetThreadContext() which doesn't work for async actor methods.

The owner_address is already there before calling PinExistingReturnObject(). This fix try to avoid the segfault by passing owner_address to PinExistingReturnObject().

Related issue number

fix #46489

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[rynewang]

can we add a comment on worker_context_.GetCurrentTask() that we can't use it in fiber context?

[hongchaodeng]

can we add a comment on worker_context_.GetCurrentTask() that we can't use it in fiber context?

Let me create another PR for it. I have a couple of ideas to refactor it.