Leaking dynamically created meshes when cloning UXML items to a UI Document every frame

Reproduction steps:
1. Open project “2022.2_BugReport.zip”
2. Open “SampleScene”
3. Enter Play Mode
4. Open “Window\Analysis\Profiler” and observe “Memory\Mesh Memory”

Expected result: Mesh Memory is not rising
Actual result: Mesh Memory is rising

Reproducible with: 2022.2.0a9, 2022.3.7f1, 2023.1.0a19
Not reproducible with: 2021.3.29f1, 2022.2.0a8, 2023.1.9f1, 2023.2.0b5
Fixed in: 2023.1.0a20

Reproducible on: macOS Ventura 13.2.1 (Intel), Windows 11 (by the reporter)
Not reproducible on: No other environment tested

Notes:

• Unchecking the “Leak On\Off” checkbox in Game view stops Mesh Memory from rising
• Also reproducible in Standalone Player