fixed the random rotation augmentation inconsistency

[ChristopherKotthoff]

Update Augmentation Pipeline to Improve Coverage and Efficiency

Description of Changes

• Updated RandomRotation to cover a full 360-degree range (angle=[0, 360], sample_style="range"), replacing the previous fixed [90, 90] which provided no rotation augmentation.
• Adjusted RandomFlip probability from 0.4 to 0.5 for a simpler and more balanced augmentation strategy.
• Simplified flipping to use a single RandomFlip with horizontal=True instead of separate horizontal and vertical flips.

Justification

1. Rotation Augmentation: The previous configuration with [90, 90] effectively applied no rotation variation. The updated 360-degree range ensures diverse rotations and better augmentation coverage.
2. Flip Probability Change: A probability of 0.5 aligns with the standard approach, ensuring equal chances of flipping or not flipping, which simplifies implementation and interpretation.
3. Single Flip Augmentation: A single horizontal flip is sufficient to achieve all unique mirroring transformations when combined with 360-degree rotations. Adding a separate vertical flip would be redundant.

Impact

This change improves the diversity and efficiency of the augmentation pipeline, ensuring a better-distributed dataset for training.