[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>

.github/workflows/scripts/config.yaml

@@ -126,6 +126,8 @@ e2e-multicard-2-cards:
     estimated_time: 1050
   - name: tests/e2e/multicard/2-cards/test_single_request_aclgraph.py
     estimated_time: 215
+  - name: tests/e2e/multicard/2-cards/test_disaggregated_encoder.py
+    estimated_time: 90
 
 e2e-multicard-4-cards:
   # TODO: recover skipped tests