[BUG] from_rotated_box: theta kwarg represents clockwise, not counterclockwise rotation

[allenleetc]

Describe the problem

The doc for from_rotated_box indicates that the theta kwarg represents a counter-clockwise rotation in radians (as would be typical).

However, in practice the rotation on the image as displayed in the App is clockwise.

Code to reproduce issue

import fiftyone as fo
import fiftyone.zoo as foz

dataset = foz.load_zoo_dataset('quickstart',
                               max_samples=1,
                               dataset_name='rotated-box',
                               drop_existing_dataset=True)
dataset.persistent = True

dataset.compute_metadata()
metadata = dataset.first().metadata
polyline = fo.Polyline.from_rotated_box(200, 100, 150, 30, np.pi/8, 
                                        frame_size=(metadata.width,metadata.height), 
                                        label='foo')
sample = dataset.first()
sample['rotated_box'] = polyline
sample.save()

session = fo.launch_app(dataset,auto=False)

System information

• OS Platform and Distribution (e.g., Linux Ubuntu 22.04): MacOS 14.4
• Python version (python --version): 3.10
• FiftyOne version (fiftyone --version): 0.23.7
• FiftyOne installed from (pip or source): pip

Willingness to contribute

The FiftyOne Community encourages bug fix contributions. Would you or another
member of your organization be willing to contribute a fix for this bug to the
FiftyOne codebase?

• Yes. I can contribute a fix for this bug independently
• Yes. I would be willing to contribute a fix for this bug with guidance
  from the FiftyOne community
• No. I cannot contribute a bug fix at this time

[allenleetc]

This is probably just due to axis conventions for image display; maybe just a doc issue