No 3D Preview Zoom Hotkey

### Custom Node Testing

- [x] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

I would expect `Ctrl + Shift + Left mouse drag` to zoom the 3D view the same way it zooms the workspace.

### Actual Behavior

Both `Ctrl + Left Drag` and `Ctrl + Shift + Left Drag` pans the 3D view

### Steps to Reproduce

Ctrl + Shift + Left Drag on the 3D view

### Debug Logs

```powershell
python main.py --disable-all-custom-nodes
[WARNING] WARNING: You need pytorch with cu130 or higher to use optimized CUDA operations.
[INFO] Found comfy_kitchen backend eager: {'available': True, 'disabled': False, 'unavailable_reason': None, 'capabilities': ['apply_rope', 'apply_rope1', 'apply_rope_split_half', 'apply_rope_split_half1', 'dequantize_mxfp8', 'dequantize_nvfp4', 'dequantize_per_tensor_fp8', 'gemv_awq_w4a16', 'quantize_mxfp8', 'quantize_nvfp4', 'quantize_per_tensor_fp8', 'quantize_svdquant_w4a4', 'scaled_mm_mxfp8', 'scaled_mm_nvfp4', 'scaled_mm_svdquant_w4a4', 'stochastic_rounding_fp8']}
[INFO] Found comfy_kitchen backend triton: {'available': True, 'disabled': True, 'unavailable_reason': None, 'capabilities': ['apply_rope', 'apply_rope1', 'apply_rope_split_half', 'apply_rope_split_half1', 'dequantize_nvfp4', 'dequantize_per_tensor_fp8', 'quantize_mxfp8', 'quantize_nvfp4', 'quantize_per_tensor_fp8']}
[INFO] Found comfy_kitchen backend cuda: {'available': True, 'disabled': True, 'unavailable_reason': None, 'capabilities': ['apply_rope', 'apply_rope1', 'apply_rope_split_half', 'apply_rope_split_half1', 'dequantize_nvfp4', 'dequantize_per_tensor_fp8', 'gemv_awq_w4a16', 'quantize_mxfp8', 'quantize_nvfp4', 'quantize_per_tensor_fp8', 'quantize_svdquant_w4a4', 'scaled_mm_nvfp4', 'scaled_mm_svdquant_w4a4', 'stochastic_rounding_fp8']}
[INFO] Checkpoint files will always be loaded safely.
[INFO] Total VRAM 7806 MB, total RAM 15286 MB
[INFO] pytorch version: 2.9.0+cu128
[INFO] Set vram state to: NORMAL_VRAM
[INFO] Device: cuda:0 NVIDIA GeForce RTX 4070 Laptop GPU : cudaMallocAsync
[INFO] Using async weight offloading with 2 streams
[INFO] Enabled pinned memory 13757.0
[INFO] working around nvidia conv3d memory bug.
[INFO] Using pytorch attention
aimdo: /project/src-posix/cuda-funchooks.c:52:DEBUG:aimdo_setup_hooks: hooks successfully installed
aimdo: /project/src/control.c:247:INFO:comfy-aimdo inited for GPU: NVIDIA GeForce RTX 4070 Laptop GPU (VRAM: 7805 MB)
[INFO] DynamicVRAM support detected and enabled
[INFO] Python version: 3.12.3 (main, Mar 23 2026, 19:04:32) [GCC 13.3.0]
[INFO] ComfyUI version: 0.25.0
[INFO] comfy-aimdo version: 0.4.10
[INFO] comfy-kitchen version: 0.2.10
[INFO] comfyui-frontend-package version: 1.45.19
[INFO] comfyui-workflow-templates version: 0.10.0
[INFO] comfyui-embedded-docs version: 0.5.5
[INFO] comfy-kitchen version: 0.2.10
[INFO] comfy-aimdo version: 0.4.10
[INFO] [Prompt Server] web root: /home/wray/comfy/.comfy-env/lib/python3.12/site-packages/comfyui_frontend_package/static
[INFO] Asset seeder disabled
[INFO] Skipping loading of custom nodes
[INFO] Context impl SQLiteImpl.
[INFO] Will assume non-transactional DDL.
[INFO] Using RAM pressure cache.
[INFO] Starting server

[INFO] To see the GUI go to: http://127.0.0.1:8188
```

### Other

This could be considered a nice-to-have if not for the fact that the current only way to zoom the 3D Preview node is with middle mouse drag which has a bug #14590

Run `python main.py --disable-all-custom-nodes` and reproduce the shortcut in the 3D Preview node. Start by tracing the frontend mouse handling for the 3D view and compare it with workspace zoom behavior. Done means Ctrl+Shift+left drag zooms the 3D view while Ctrl+left drag continues to pan, with the behavior covered by an appropriate regression test.

Written by the indexing model from the issue text.