Editor crashes when enabling "Release Instance On Disable" checkbox in Visual Effect Inspector Instancing section

Steps to reproduce:
1. Create new Unity project using Universal 3D Template
2. Open Package Manager window and install Visual Effects Graph package
3. Once installed, in Hierarchy window create Visual Effect (Right-click > Visual Effects > Visual Effect)
4. Select Visual Effect in Hierarchy window
5. In the Inspector window, navigate to Instancing section and enable the "Release Instance On Disable" checkbox
6. Observe the Editor

Actual results: Editor crashes with a fatal segfault (SIGSEGV) in the Mono runtime. The crash originates in VFXBatchedEffect::AddInstance triggered by VisualEffectEditor.DrawInstancingProperties() while processing a mouse-up event in the Inspector

Expected results: Enabling the "Release Instance On Disable" checkbox updates the Visual Effect instancing settings without crashing the Editor

Reproducible with versions: 6000.5.0a5, 6000.5.0b10, 6000.6.0a6

Can’t test with versions: 6000.5.0a2, 6000.4.9f1 and lower (“Release Instance On Disable” checkbox is not available in Instancing section)

Tested on (OS): Ubuntu 24.04, macOS Tahoe 26.4.1 (M1)

First lines of stack trace:

 at <unknown> <0xffffffff>
  at UnityEngine.VFX.VisualEffect:RecreateBatchInstance_Injected <0x00007>                          
  at UnityEngine.VFX.VisualEffect:RecreateBatchInstance <0x0009b>                                   
  at UnityEditor.VFX.VisualEffectEditor:DrawInstancingProperties <0x00363>                          
  at UnityEditor.VFX.VisualEffectEditor:OnInspectorGUI <0x00637>