[OP][Feature] 统一 limit_thinking_content_length CUDA 算子，支持回复长度限制与注入序列 (#6493)

* Initial plan

* Migrate PRs #6311, #6129, #6305 to develop and merge unit tests

Co-authored-by: yuanlehome <23653004+yuanlehome@users.noreply.github.com>

* fix

* update

* fix

* fix ci

* fix ci

* Initial plan

* test: add test_chat_with_response_max_tokens to test_EB_VL_Lite_serving.py

Co-authored-by: yuanlehome <23653004+yuanlehome@users.noreply.github.com>

* test: add disable-thinking case to test_chat_with_response_max_tokens

Co-authored-by: yuanlehome <23653004+yuanlehome@users.noreply.github.com>

* test: add both reasoning_max_tokens and response_max_tokens case

Co-authored-by: yuanlehome <23653004+yuanlehome@users.noreply.github.com>

* fix ci

* fix ci

* fix ci

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: yuanlehome <23653004+yuanlehome@users.noreply.github.com>

custom_ops/setup_ops.py

@@ -307,8 +307,7 @@ elif paddle.is_compiled_with_cuda():
         "gpu_ops/noaux_tc_redundant.cu",
         "gpu_ops/custom_all_reduce/all_reduce.cu",
         "gpu_ops/merge_prefill_decode_output.cu",
-        "gpu_ops/limit_thinking_content_length_v1.cu",
-        "gpu_ops/limit_thinking_content_length_v2.cu",
+        "gpu_ops/limit_thinking_content_length.cu",
         "gpu_ops/update_attn_mask_offsets.cu",
         "gpu_ops/fused_neox_rope_embedding.cu",
         "gpu_ops/gelu_tanh.cu",
@@ -559,8 +558,7 @@ elif paddle.is_compiled_with_custom_device("iluvatar_gpu"):
                 "gpu_ops/text_image_index_out.cu",
                 "gpu_ops/text_image_gather_scatter.cu",
                 "gpu_ops/set_data_ipc.cu",
-                "gpu_ops/limit_thinking_content_length_v1.cu",
-                "gpu_ops/limit_thinking_content_length_v2.cu",
+                "gpu_ops/limit_thinking_content_length.cu",
                 "gpu_ops/recover_decode_task.cu",
                 "gpu_ops/update_inputs_v1.cu",
                 "gpu_ops/get_img_boundaries.cc",
@@ -631,8 +629,7 @@ elif paddle.device.is_compiled_with_custom_device("metax_gpu"):
         "gpu_ops/text_image_gather_scatter.cu",
         "gpu_ops/text_image_index_out.cu",
         "gpu_ops/get_position_ids_and_mask_encoder_batch.cu",
-        "gpu_ops/limit_thinking_content_length_v1.cu",
-        "gpu_ops/limit_thinking_content_length_v2.cu",
+        "gpu_ops/limit_thinking_content_length.cu",
         "gpu_ops/update_attn_mask_offsets.cu",
         "gpu_ops/append_attn/mla_cache_kernel.cu",
         "gpu_ops/append_attn/get_block_shape_and_split_kv_block.cu",