3.1.3.dev2: Nightly Development Release

What's Changed

Bug Fixes 🐞

• make sure workers emit stop events by @zzstoatzz in #16002

Development & Tidiness 🧹

• Update @prefecthq/prefect-design to version 2.14.10 by @marvin-robot in #16004
• Fix formatting for output file tree structure in customize.mdx by @discdiver in #16006
• [UI v2] Variables table - part 1 by @desertaxle in #15985

Full Changelog: 3.1.3.dev1...3.1.3.dev2