refactor: reduce webview lock contention (#6271)

* refactor: replace handle::Handle::get_window() with WindowManager::get_main_window() in multiple files

* refactor: enhance WindowManager to return window state alongside the main window instance

* refactor: update useProfiles and ProfilePage to support profile overrides and improve patchProfilesConfig return type

* refactor: enhance handle_success to check main window existence before notifying profile changes

* refactor: simplify get_main_window_with_state by using pattern matching and improve window state handling

* refactor: fix window activation by removing unnecessary reference in activate_existing_main_window

* refactor: remove redundant macOS conditional for window_manager import

src-tauri/src/core/handle.rs

@@ -5,7 +5,7 @@ use std::sync::{
     Arc,
     atomic::{AtomicBool, Ordering},
 };
-use tauri::{AppHandle, Manager as _, WebviewWindow};
+use tauri::AppHandle;
 use tauri_plugin_mihomo::{Mihomo, MihomoExt as _};
 use tokio::sync::RwLockReadGuard;
 
@@ -55,10 +55,6 @@ impl Handle {
         Self::app_handle().mihomo().read().await
     }
 
-    pub fn get_window() -> Option<WebviewWindow> {
-        Self::app_handle().get_webview_window("main")
-    }
-
     pub fn refresh_clash() {
         let handle = Self::global();
         if handle.is_exiting() {