[router] change ci names and update log level in ci (#12021)

.github/workflows/pr-benchmark-rust.yml

-name: PR Benchmark (Rust Router)
+name: PR Benchmark (SMG Components)
 
 on:
   push:

.github/workflows/pr-test-pd-router.yml

-name: PR Test (PD Router)
+name: PR Benchmark (SMG PD Router)
 
 on:
   push:

.github/workflows/pr-test-rust.yml

-name: PR Test (Rust)
+name: PR Test (SMG)
 
 on:
   push:

sgl-router/py_test/e2e_grpc/fixtures.py

@@ -267,6 +267,8 @@ def popen_launch_workers_and_router(
         policy,
         "--model-path",
         model,
+        "--log-level",
+        "warn",
     ]
 
     # Add worker URLs

sgl-router/py_test/e2e_response_api/router_fixtures.py

@@ -488,6 +488,8 @@ def popen_launch_workers_and_router(
         policy,
         "--model-path",
         model,
+        "--log-level",
+        "warn",
     ]
 
     # Add worker URLs