[C++][Acero] Asofjoin does not propagate pause upstream
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Component: C++
Type: bug
- Dominant language
- C++
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Description
### Describe the bug, including details regarding any error messages, version, and platform.
Current implementation of `asofjoin` node ignores pause requests from downstream. This can lead to big memory consumption when downstream nodes process data slower than the join node.
I created [PR46140](https://github.com/apache/arrow/pull/46140) that throttles join processing and input queues propagate pauses upstream.
### Component(s)
C++
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