Steps to reproduce:

Open the attached "IN-151679" project
Switch the platform to Android in the Build Profiles window
Open the "Assets/Scenes/SampleScene.unity" scene
Select the "Assets/Rendering/Renderer_Thermal_Android_ExtraRenderPass.asset" asset in the Project window
In the Inspector, set Opaque Layer Mask and Transparent Layer Mask to Everything
Open the Render Graph Viewer (Window > Analysis > Render Graph Viewer)
Enter Play Mode
Press the "Switch Renderer" button in the Game view
Observe the "Draw UIToolkit/uGUI Overlay" pass in the Render Graph Viewer

Actual result: The "Draw UIToolkit/uGUI Overlay" pass is not merged into the camera native render pass, although that native render pass emits only 3 of 8 subpasses
Expected result: The "Draw UIToolkit/uGUI Overlay" pass is merged into the camera native render pass

Reproducible with: 6000.0.4f1 (b5d5d06b038a), 6000.0.84f1, 6000.3.26f1, 6000.6.5f1, 6000.7.0b4, 7000.0.0a8
Not reproducible with: 6000.0.3f1 (019aa96b6ed9)

Reproducible on: Windows 11
Not reproducible on: No other environments tested

Built with: Windows 11

Reproducible with these devices:
VLNQA00319 - Google Pixel 4 (Pixel 4) - CPU: Snapdragon 855 SM8150, GPU: Adreno 640, OS: 13
VLNQA00642 - Google Pixel 9a (Pixel 9a) - CPU: Google Tensor G4, GPU: Mali-G715, OS: 15
VLNQA00367 - Galaxy Z Fold2 5G (SM-F916B) - CPU: Snapdragon 865 SM8250, GPU: Adreno 650, OS: 11
VLNQA00662 - Samsung Galaxy S26+ (SM-S947B) - CPU: Exynos 2600, GPU: Xclipse 960, OS: 16
Reporter's info - Samsung Galaxy Tab S10 Lite

Note: Reproducible in the Editor with Direct3D12 and Vulkan, and in the Android Player with Vulkan