ENH: Improve detailed computation perf

[czaloom]

Feature Type

• Adding new functionality to valor

• Changing existing functionality in valor

• Removing existing functionality in valor

Problem Description

Optimize:
https://github.com/Striveworks/valor/blob/a9685298ddac5609aee75c12274a4587c65e81ba/src/valor_lite/object_detection/computation.py#L771C5-L775C73

Feature Description

We should iteratively mask the cache over sorted thresholds so that future cycles only operate over pre-filtered sets.

Additional Context

No response