[ROCm][CI][Bugfix] Fix Siglip2 rotary embedding dispatch and InternVL video test tolerance (#31235)

Signed-off-by: Andreas Karatzas <akaratza@amd.com>

tests/models/multimodal/generation/test_common.py

@@ -513,6 +513,7 @@ VLM_TEST_SETTINGS = {
         max_model_len=8192,
         use_tokenizer_eos=True,
         patch_hf_runner=model_utils.internvl_patch_hf_runner,
+        num_logprobs=10 if current_platform.is_rocm() else 5,
     ),
     "intern_vl-hf": VLMTestInfo(
         models=["OpenGVLab/InternVL3-1B-hf"],

vllm/model_executor/models/siglip2navit.py

@@ -163,8 +163,10 @@ def apply_rotary_pos_emb(
         enable_fp32_compute=True,
     )
 
-    if is_flash_attn_backend and not current_platform.is_cuda():
+    if is_flash_attn_backend and current_platform.is_cuda():
         apply_rotary_emb_func = apply_rotary_emb.forward_cuda
+    elif is_flash_attn_backend and current_platform.is_rocm():
+        apply_rotary_emb_func = apply_rotary_emb.forward_hip
     else:
         apply_rotary_emb_func = apply_rotary_emb.forward_native