Fix lint for router (#9636)

sgl-router/tests/tool_parser_mistral.rs

@@ -59,7 +59,7 @@ async fn test_mistral_nested_json() {
 async fn test_mistral_with_text_after() {
     let parser = MistralParser::new();
     let input = r#"[TOOL_CALLS] [{"name": "test", "arguments": {}}]
-    
+
 And here's some text after the tool call that should be ignored."#;
 
     let result = parser.parse_complete(input).await.unwrap();

sgl-router/tests/tool_parser_mixed_edge_cases.rs

@@ -116,9 +116,9 @@ async fn test_empty_and_whitespace_variations() {
     let cases = vec![
         r#"  {"name":"compact","arguments":{}}  "#,
         r#"
-        
+
         {"name": "spaced", "arguments": {}}
-        
+
         "#,
         r#"	{"name": "tabbed", "arguments": {}}	"#, // tabs
     ];

sgl-router/tests/tool_parser_pythonic.rs

@@ -159,7 +159,7 @@ async fn test_pythonic_real_world_llama4() {
     // Actual output from Llama 4 model
     let input = r#"I'll help you with multiple tasks. Let me search for information and perform calculations.
 
-[web_search(query="latest Rust features", max_results=3, safe_search=True), 
+[web_search(query="latest Rust features", max_results=3, safe_search=True),
  calculate(expression="42 * 3.14159", precision=2),
  get_weather(city="San Francisco", units="fahrenheit", include_forecast=False)]