Automatic camera placement can result in edge-on slice views (appears empty)

[mvictoras]

When using the slice filter in Ascent without explicitly specifying a camera, the automatically computed camera position can be aligned nearly parallel to the slice plane. In these cases, the slice is rendered edge-on and appears empty (black image), even though the slice operation itself is successful.
This behavior is misleading, as it suggests the slice failed when it is actually a viewing issue.

Steps to Reproduce:

1. Use a dataset with bounds similar to:

• x ∈ [-0.05, 0.05]
• y ∈ [-0.05, 0.05]
• z ∈ [0, 1]

2. Create a slice:

type: "slice"
params:
  point: {x: 0.0, y: 0.0, z: 0.5}
  normal: {x: 1.0, y: 0.0, z: 0.0}

3. Do not specify a camera (use default rendering).

Observed Behavior:

• The rendered image appears black or empty.
• This gives the impression that the slice failed.

Expected Behavior:

• The slice should be visible under default camera settings, or
• The system should avoid placing the camera nearly parallel to the slice plane.