Remove stale (None, None) fallback in qwen2_5_vl batch_different_resolutions test (#47972)

Remove stale (None, None) fallback with garbage token in qwen2_5_vl batch_different_resolutions test

The (None, None) fallback had ' addCriterion\n' prefixing the second
batch item's expected output — a stale value from an older commit
(c61ca64) that no longer matches any current hardware's output.
Hardware-specific keys (cuda/rocm/xpu) all have clean expected values.

Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>