[FIX] check_inputs function in lumina2

[SahilCarterr]

What does this PR do?

Fixes #10782 check_inputs function in Lumina2 Pipeline

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[hlky]

Thanks @SahilCarterr.

[hlky]

Failing tests are unrelated.

Note for other reviewers: This is common with newer models so we should add it to the new model testing checklist, and this should be using patch_size so we can follow-up by changing that in all pipelines.