Excessive Memory Allocations in the Editor when hovering over labels in the Inspector window

Reproduction steps:
1. Open the attached “BugRepro” project
2. Open the “Scenes/SampleScene” in the Project window
3. Select the “Main Camera” GO in the Hierarchy window
4. Open the “Task Manager” application
5. Hover over multiple labels in the Inspector window
6. Observe the Memory usage of the Unity application in the “Task Manager” application

Expected result: The Memory usage stays the same
Actual result: The Memory usage increases depending on how many times the labels have been hovered on

Reproducible with: 2021.3.36f1, 2022.3.22f1, 2023.2.15f1, 6000.0.0b13

Reproducible on: Windows 10, Windows 11
Not reproducible on: No other environment tested

Notes:

• On Windows 10 the bug does reproduce with 2021.3.36f1 only when the on-hover label shows up
• After passing a certain amount of megabytes (depending on the Editor version), the Allocation resets
• See "Handy note for IN-71639" for more information