4.37: propose that (Legacy) Qemu VMM + osxfs will be removed in a future version (#21621)

<!--Delete sections as needed -->

FYI @KatTomrushka 

## Description

Highlight 2 deprecations in the release notes. Technically both were
highlighted before in the DD UI by adding "(Legacy)" labels, but it's
better to over-communicate than under-communicate!

For filesharing, anyone still using osxfs should switch to virtiofs
which is faster and more stable.

For running the Linux VM locally, anyone still using Qemu on Apple
Silicon should switch to virtualization.framework which is also faster
and more stable.

In case someone hits a problem, can't switch and needs help, include
links to support and the github issue tracker.

# Some history:

- In 2020 osxfs was marked as legacy (Docker Desktop 2.4.2.0).

- In 2023 with the release of macOS 14, all supported macOS versions
(current release plus previous two) use virtualization.framework by
default.

- In 2024 (Docker Desktop 4.36) Qemu as a VMM was marked as legacy in
the UI.


## Related issues or tickets

<!-- Related issues, pull requests, or Jira tickets -->

## Reviews

<!-- Notes for reviewers here -->
<!-- List applicable reviews (optionally @tag reviewers) -->

- [ ] Technical review
- [ ] Editorial review
- [ ] Product review

---------

Signed-off-by: David Scott <[email protected]>
Co-authored-by: Allie Sadler <[email protected]>

Author: djs55

content/manuals/desktop/release-notes.md

@@ -66,6 +66,13 @@ Take a look at the [Docker Public Roadmap](https://github.com/orgs/docker/projec
 
 - Kubernetes cluster may not start if **Registry Access Manager** is enabled. As a workaround, add `registry.k8s.io` and `<geo>-docker.pkg.dev` to **Registry Access Management** policies.
 
+### Deprecation
+
+#### For Mac
+
+- QEMU (Legacy) as a VMM on Apple Silicon will be removed in a future version. It is recommended that you switch to the Apple Virtualization Framework for increased performance and stability. If you encounter an issue, [contact Docker Support](https://www.docker.com/support/) or [file a GitHub issue](https://github.com/docker/for-mac/issues).
+- osxfs (Legacy) will be removed in a future version. It is recommended that you switch to VirtioFS for increased performance. If you encounter an issue, [contact Docker Support](https://www.docker.com/support/) or [file a GitHub issue](https://github.com/docker/for-mac/issues).
+
 ## 4.36.0
 
 {{< release-date date="2024-11-18" >}}