[CustomOp] Register RotaryEmbedding instead of overwrite forward (#2385)

### What this PR does / why we need it?
Register RotaryEmbedding instead of overwrite forward

### Does this PR introduce _any_ user-facing change?
N/A

### How was this patch tested?
CI passed with new added/existing test.

- vLLM version: v0.10.0
- vLLM main:
808d2e9aa0

---------

Signed-off-by: Icey <1790571317@qq.com>
Signed-off-by: wxsIcey <1790571317@qq.com>

.github/workflows/vllm_ascend_test.yaml

@@ -287,4 +287,4 @@ jobs:
           pytest -sv tests/e2e/multicard/ --ignore=tests/e2e/multicard/test_ilama_lora_tp2.py \
             --ignore=tests/e2e/multicard/test_offline_inference_distributed.py \
             --ignore=tests/e2e/multicard/test_data_parallel.py \
-            --ignore=tests/e2e/multicard/test_offline_inference_310p.py
+            --ignore=tests/e2e/multicard/test_offline_inference_310p.py