Convert formatting to use ruff instead of yapf + isort (#26247)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

tests/v1/e2e/test_kv_sharing_fast_prefill.py

@@ -76,7 +76,9 @@ def test_kv_sharing_fast_prefill(
         # managing buffers for cudagraph
         cudagraph_copy_inputs=True,
         level=CompilationLevel.PIECEWISE
-        if not enforce_eager else CompilationLevel.NO_COMPILATION)
+        if not enforce_eager
+        else CompilationLevel.NO_COMPILATION,
+    )
 
     with monkeypatch.context() as m:
         m.setenv("VLLM_USE_V1", "1")
@@ -94,21 +96,21 @@ def test_kv_sharing_fast_prefill(
 
         cleanup(llm, compilation_config)
 
-        llm = LLM(model="google/gemma-3n-E2B-it",
-                  enforce_eager=enforce_eager,
-                  compilation_config=compilation_config,
-                  seed=SEED,
-                  kv_sharing_fast_prefill=True)
+        llm = LLM(
+            model="google/gemma-3n-E2B-it",
+            enforce_eager=enforce_eager,
+            compilation_config=compilation_config,
+            seed=SEED,
+            kv_sharing_fast_prefill=True,
+        )
         optimized_responses = llm.generate(test_prompts, sampling_params)
 
         cleanup(llm, compilation_config)
 
         misses = 0
 
-        for ref_response, optimized_response in zip(ref_responses,
-                                                    optimized_responses):
-            if ref_response.outputs[0].text != optimized_response.outputs[
-                    0].text:
+        for ref_response, optimized_response in zip(ref_responses, optimized_responses):
+            if ref_response.outputs[0].text != optimized_response.outputs[0].text:
                 misses += 1
 
         assert misses == 0