How to reproduce:
1. Create a new Unity project and install the VFX package
2. In the Project window, right-click -> Create -> Visual Effects -> Visual Effect Graph
3. In the "Create new VFX Asset" window, click "Install Learning Templates"
4. Wait for the scripts to compile and observe the Console

Expected results: No warnings are thrown
Actual results: "FindFirstObjectByType is obsolete" warning is thrown

Reproducible with: 6000.4.0b10, 6000.5.0a8
Not reproducible with: 6000.0.69f1, 6000.3.10f1 (Method is not obsolete) 

Reproducible on: Ubuntu 24, macOS Tahoe 26
Not reproducible on: No other environment tested

Full warning:
Assets/Samples/Scriptable Render Pipeline Core/17.5.0/Common/Scripts/Editor/SamplesShowcaseEditorWindow.cs(22,48): warning CS0618: 'Object.FindFirstObjectByType(Type)' is obsolete: 'FindFirstObjectByType has been deprecated because it relies on instance ID ordering. Use FindAnyObjectByType instead, which does not depend on ordering.'