[BUG] view.annotate with label_type="instances" is creating a task on CVAT with type any (instead of mask)

[piercus]

Describe the problem

When using FiftyOne to create an instance CVAT job (on app.cvat.ai) the resulting job is created with a "type": "any" instead of a "type": "mask".

Code to reproduce issue

import fiftyone as fo
import fiftyone.zoo as foz

dataset = foz.load_zoo_dataset("coco-2017", split="validation")
anno_key = "test_annotation"
view = dataset.limit(3)
view.annotate(
    anno_key,
    label_type="instances",
    label_field="detections",
    classes=["label"],
    task_name="My task"
)

Go in CVAT :

• click on "Tasks"
• Open the Task
• Click on "Raw"
• The type is "any"

System information

• OS Platform and Distribution (e.g., Linux Ubuntu 22.04): Linux
• Python version (python --version): Python 3.10.14
• FiftyOne version (fiftyone --version): FiftyOne v1.0.0, Voxel51, Inc.
• FiftyOne installed from (pip or source): pip

Other info/logs

Seems to be related to

fiftyone/fiftyone/utils/cvat.py

Line 4102 in 881f1fb

{"name": name, "attributes": list(attributes.values())}

On my understanding, we would need to have something like

{"name": name, "type": label_type, "attributes": list(attributes.values())}

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