Use synchronous ring buffer map callbacks by default

[mikeagun]

Describe the bug

The current behavior on Windows is to only support asynchronous callbacks for ring buffer maps. The callback will be automatically invoked when data is available.

On linux there are no asynchronous callbacks for ringbuffers and the callback is only called inside calls to ring_buffer__poll() and ring_buffer__consume().

This will be a major breaking change to the ring buffer behavior, so should be put off until other API breaking changes are made. This also depends on #3848 being completed to support synchronous consumers.

OS information

No response

Steps taken to reproduce bug

1. Call ring_buffer__new.
2. Write events into ring buffer
3. callback will be automatically invoked after records are written.

Expected behavior

Expected behaviour on linux is that callback is not called outside of ring buffer poll and consume. This should eventually become the Windows default to resolve this incompatibility.

Actual outcome

On Windows there are only asynchronous callbacks right now, so the callback could be invoked as soon as it is attached.

Additional details

No response