Fix logon-screen password with click approval (#14335)

src/platform/windows.rs

@@ -527,6 +527,7 @@ const SERVICE_TYPE: ServiceType = ServiceType::OWN_PROCESS;
 
 extern "C" {
     fn get_current_session(rdp: BOOL) -> DWORD;
+    fn is_session_locked(include_rdp: BOOL) -> BOOL;
     fn LaunchProcessWin(
         cmd: *const u16,
         session_id: DWORD,
@@ -1129,6 +1130,10 @@ pub fn is_prelogin() -> bool {
     username.is_empty() || username == "SYSTEM"
 }
 
+pub fn is_locked() -> bool {
+    unsafe { is_session_locked(share_rdp()) == TRUE }
+}
+
 // `is_logon_ui()` is regardless of multiple sessions now.
 // It only check if "LogonUI.exe" exists.
 //