Release notes for 3.86.0

Author: dmerand

RELEASE_NOTES/3.86.md

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+## App
+- Add support for Windows on ARM cpus for Functions binaries
+- Fix automatic token refresh to avoid 401 errors
+- Add support to `app dev` for dev stores with custom domains
+
+## Theme
+- Add --allow-live flag to theme dev to allow development on live themes without confirmation
+
+## CLI
+- Preserve session alias on token refresh