[Bugfix][LoRA] Fix the issue when enable LoRA + tp + fully_sharded_loras (#6650)

### What this PR does / why we need it?
Fix the issue #6143 .

### Does this PR introduce _any_ user-facing change?
Allow to start the server with "--enable-lora && --fully-sharded-loras
&& --tensor_parallel_size 2".

### How was this patch tested?
pytest -sv tests/e2e/multicard/2-cards/test_llama32_lora_tp2.py
- vLLM version: v0.15.0
- vLLM main:
d7e17aaacd

---------

Signed-off-by: paulyu12 <507435917@qq.com>
Co-authored-by: wangxiyuan <wangxiyuan1007@gmail.com>

.github/workflows/scripts/config.yaml

@@ -97,6 +97,8 @@ e2e-multicard-2-cards:
     estimated_time: 400
   - name: tests/e2e/multicard/2-cards/test_ilama_lora_tp2.py
     estimated_time: 60
+  - name: tests/e2e/multicard/2-cards/test_llama32_lora_tp2.py
+    estimated_time: 223
   # Run the test in a separate step to avoid oom
   - name: tests/e2e/multicard/2-cards/test_offline_inference_distributed.py::test_deepseek_multistream_moe_tp2
     estimated_time: 100