### What this PR does / why we need it?
This PR fixes a bug in the `_merge_multimodal_embeddings` function where
the parameter order was incorrect. The `multimodal_embeddings` and
`is_multimodal` parameters were swapped, which would lead to runtime
errors when the function is called with positional arguments.
This change corrects the function signature to align with its expected
usage, ensuring that multimodal embeddings are correctly merged.
### Does this PR introduce _any_ user-facing change?
No. This is a bug fix for an internal utility function and has no
user-facing impact.
### How was this patch tested?
The correctness of this fix is validated by existing tests for
multimodal functionality. With the incorrect function signature, these
tests would fail due to argument type mismatches. CI passing confirms
the fix is effective.
- vLLM version: v0.16.0
- vLLM main:
4034c3d32e
Signed-off-by: tanhaoan333 <tanhaoan@huawei.com>
57c554a23f