[CI/Build] Fix Prithvi plugin test (vllm-project#27393)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>
Signed-off-by: Alberto Perdomo <aperdomo@redhat.com>

Author: DarkLight1337

tests/plugins_tests/test_io_processor_plugins.py

@@ -100,6 +100,7 @@ def test_prithvi_mae_plugin_offline(vllm_runner, model_name: str):
         model_name,
         runner="pooling",
         skip_tokenizer_init=True,
+        enable_mm_embeds=True,
         trust_remote_code=True,
         enforce_eager=True,
         # Limit the maximum number of parallel requests