[BUG] EventHubsTemplate#sendAsync is not real async because of block()

[chenrujun]

Describe the bug
In my understanding, async method should not contains Mono.block(). But current EventHubsTemplate#sendAsync() method's implementation contains 2 Mono.block()s.

Here is the screenshot of related code:

Code Snippet

Expected behavior
No block() in EventHubsTemplate#sendAsync()

[github-actions]

Hi @chenrujun, we deeply appreciate your input into this project. Regrettably, this issue has remained unresolved for over 2 years and inactive for 30 days, leading us to the decision to close it. We've implemented this policy to maintain the relevance of our issue queue and facilitate easier navigation for new contributors. If you still believe this topic requires attention, please feel free to create a new issue, referencing this one. Thank you for your understanding and ongoing support.