refactor: replace hardcoded DNS config filename with constant reference (#5280)

* refactor: replace hardcoded DNS config filename with constant reference

* refactor: remove redundant import of constants in IClashTemp template method

* refactor: add conditional compilation for DEFAULT_REDIR based on OS

* refactor: simplify default TPROXY port handling and remove unused trace_err macro

* refactor: simplify default TPROXY port fallback logic

src-tauri/src/utils/logging.rs

@@ -80,15 +80,6 @@ macro_rules! log_err {
     };
 }
 
-#[macro_export]
-macro_rules! trace_err {
-    ($result: expr, $err_str: expr) => {
-        if let Err(err) = $result {
-            log::trace!(target: "app", "{}, err {}", $err_str, err);
-        }
-    }
-}
-
 /// wrap the anyhow error
 /// transform the error to String
 #[macro_export]