The sub-systems are being re-registered and overwritten leading to a warning spam when entering the Play Mode with Enter Play Mode Options toggled on and Reload Domain un-toggled

How to reproduce:
1. Open the “XR Issue“ project
2. Open the “SampleScene“
3. Navigate to “Edit/Project Settings/Editor“
4. Under Enter Play Mode Settings toggle on Enter Play Mode Options
5. Leave both Reload Domain and Reload Scene un-toggled
6. Enter the Play Mode
7. Observe the Console window

Expected result: No warnings shown
Actual result: “Registering subsystem descriptor with duplicate ID '<Subsystem name>' - overwriting previous entry.“ warnings shown

Reproducible with: 5.1.5 (2021.3.42f1, 2022.3.41f1)
Could not test with: 5.1.4 (2021.3.41f1) (Could not resolve the Console errors), 6.0.1, 6.0.2 (6000.0.14f1) (Different functionality of Enter Play Mode Options, cannot just enable it)

Reproducible on: macOS 14.5 (Intel)
Not reproducible on: No other environments tested

Workaround: Toggle off the Enter Play Mode Options or leave the Enter Play Mode Options toggled on and toggle on the Reload Domain option

Notes:

• More information in the comments
• Toggling on Reload Scene will still reproduce the issue