fix: resolve the unexpected video frame drop issue of the InternVL model with multiple video inputs
Author: WesKwong
Pull request: yes

# What does this PR do?

This PR addresses a bug where the InternVL preprocessor would incorrectly drop one video frame from subsequent videos in a multi-video input.

This issue was reported in: https://github.com/OpenGVLab/InternVL/issues/1178

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Comments:
cc @zucchini-nlp 

**[For maintainers]** Suggested jobs to run (before merge)

run-slow: internvl