TextMeshPro text is broken when loaded in Unity 6, if it was built in 2022.3

Reproduction steps:
1. Open the attached “IN-110676” project
2. Import the TMP Essential Resources (Window > TextMeshPro > Import TMP Essential Resources)
3. Open the “SampleScene”
4. Import the "SampleText2022.unitypackage" from the attached files (Assets > Import Package > Custom Package...)
5. Double-click the “Text (TMP) Sample“ Prefab in Assets/Fonts/opensans in the Project View
6. Observe the Scene view

Expected result: The text is broken and/or not rendered
Actual result: The text is rendered

Reproducible with: 2023.2.0a14, 6000.0.56f1, 6000.1.16f1, 6000.2.1f1, 6000.3.0a5
Not reproducible with: 2022.3.65f1, 2023.2.0a13

Reproducible environments: Windows 11 (by reporter), macOS 15.6
Not reproducible environments: No other environments tested

Notes:

• The cause and workarounds were discussed in this thread: https://discussions.unity.com/t/null-reference-exception-in-android-app-built-with-unity-6000-0-32f1-while-loading-asset-bundle-containing-3d-textmesh-of-textmeshpro/1583581
• Can be reproduced by importing a package or by loading AssetBundles with the font