[Bugfix][LoRA] Fix LoRA bug after supporting Qwen3-Next (#3044)

### What this PR does / why we need it?
LoRA e2e test uses ilama-3.2-1B model. It uses transformers.py model
files. Its self-attention layer names end with "\*.attn", not
"\*.self_attn".

There are some other model attention layer names end with "*.attn", such
as baichuan.py, bert.py.

### Does this PR introduce _any_ user-facing change?
No.

### How was this patch tested?
pytest -sv tests/e2e/singlecard/test_ilama_lora.py
pytest -sv tests/e2e/multicard/test_ilama_lora_tp2.py

- vLLM version: v0.10.2
- vLLM main:
17b4c6685c

---------

Signed-off-by: paulyu12 <507435917@qq.com>

.github/workflows/_e2e_test.yaml

@@ -92,7 +92,7 @@ jobs:
           pytest -sv tests/e2e/singlecard/test_chunked.py
           pytest -sv tests/e2e/singlecard/test_embedding.py
           pytest -sv tests/e2e/singlecard/test_guided_decoding.py
-          #pytest -sv tests/e2e/singlecard/test_ilama_lora.py
+          pytest -sv tests/e2e/singlecard/test_ilama_lora.py
           pytest -sv tests/e2e/singlecard/test_profile_execute_duration.py
           pytest -sv tests/e2e/singlecard/test_quantization.py
           pytest -sv tests/e2e/singlecard/test_sampler.py
@@ -174,7 +174,7 @@ jobs:
           # external_launcher test is not stable enough. Fix it later
           # pytest -sv tests/e2e/multicard/test_external_launcher.py
           pytest -sv tests/e2e/multicard/test_fused_moe_allgather_ep.py
-          #pytest -sv tests/e2e/multicard/test_ilama_lora_tp2.py
+          pytest -sv tests/e2e/multicard/test_ilama_lora_tp2.py
 
           # To avoid oom, we need to run the test in a single process.
           pytest -sv tests/e2e/multicard/test_offline_inference_distributed.py::test_models_distributed_QwQ