"Found unreferenced, but undisposed ComputeTensorData/CPUTensorData" warnings are thrown when using AI Assistant with a local image model

How to reproduce:

1. Create a new project
2. Install the AI Assistant package
3. Enable and connect the local image model
4. Import a custom skill to the custom skills area
5. Refresh the custom skills
6. Observe the Console

Actual result: The Editor log continuously throws warnings from com.unity.ai.inference (see internal notes)
Expected result: Tensor data should be properly disposed and no warnings should appear

Reproducible with: 1.0.0-pre.2 (6000.3.17f1), 2.11.0-pre.1 (6000.3.17f1)

Reproducible on: macOS 26.3.1 Arm64, Windows 11 Pro x64
Not reproducible on: No other environments tested

Notes:

• Reproducible when the local image model is active
• The Finalize() method logging indicates tensors are being garbage-collected without explicit Dispose(), suggesting a disposal path is missed in the AI Assistant's image model pipeline