[Test] Add initial multi modal cases of Qwen2.5-VL-7B-Instruct for disaggregated encoder (#5301)

### What this PR does / why we need it?
This PR adds disaggregated encoder  tests for Qwen2.5-VL-7B-Instruct 
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
by running the test
by running ci

- vLLM version: release/v0.12.0

---------

Signed-off-by: wangyu31577 <wangyu31577@hundsun.com>
Signed-off-by: wangyu <53896905+yenuo26@users.noreply.github.com>
Co-authored-by: wangyu31577 <wangyu31577@hundsun.com>

tools/check_python_src_init.py

@@ -67,7 +67,7 @@ def main():
             print(f" - {pkg}")
         sys.exit(1)
     else:
-        print("✅ All Python packages have __init__.py files.")
+        print("All Python packages have __init__.py files.")
 
 
 if __name__ == "__main__":