[Bug] Crash in filterGraphicsByDatum when setHovered receives datums from multiple series (out-of-bounds access on collection marks)

Version

2.1.6 (reproduced source-wise; originally found on 2.0.0)

Link to Minimal Reproduction

https://gist.github.com/CrazyBucket/0b6018dd186c1921ba85165c1bbf177b

Steps to Reproduce

1. Open the reproduction link.
2. The chart is rendered successfully.
3. setHovered is called with a datum array that contains more items than the target mark's internal datum array.
4. Observe the runtime error in the console:

Current Behavior

TypeError: Cannot read properties of undefined (reading 'time')
at index.min.js:15:1476662
at Array.every ()
at index.min.js:15:1476642
at Array.every ()
at index.min.js:15:1476626
at Array.filter ()
at index.min.js:15:1476588
at Array.forEach ()
at index.min.js:15:1476478
at Array.forEach ()

Expected Behavior

setHovered should handle unmatched datum gracefully.

Possible expected behaviors:

• ignore datum that cannot be matched
• return without throwing an exception

A user-facing runtime crash should not happen.

Environment

- **OS**: macOS, iOS
- **Browser**: Chromium 139.0.7258.128, Safari (iOS WebKit)
- **Framework**: React
- **VChart Version**: 2.0.0, 2.1.6

Any additional comments?

Background / How we hit this

We use a multi-series health trend chart (blood pressure: systolic & diastolic) and implement cross-series highlighting via setHovered.

When the user touches the chart, we pass one datum per series at the hovered x position:

vchart.setHovered([systolicDatum, diastolicDatum])

I would be happy to submit a PR to fix this issue if the maintainers agree with the proposed direction.

Start with the setHovered entry point and trace into filterGraphicsByDatum, using the linked minimal reproduction to reproduce the out-of-bounds access. Verify behavior when the datum array contains items from multiple series, then confirm that unmatched datums are handled without a runtime exception.