fix: preview.app window may not show when opening many docs

(closes #3276)

src/api-wrappers/AXUIElement.swift

@@ -87,6 +87,7 @@ extension AXUIElement {
             (
                 books(runningApp) ||
                     keynote(runningApp) ||
+                    preview(runningApp) ||
                     iina(runningApp) ||
                     openFlStudio(runningApp, title) ||
                     crossoverWindow(runningApp, role, subrole, level) ||
@@ -143,6 +144,12 @@ extension AXUIElement {
         return runningApp.bundleIdentifier == "com.apple.iWork.Keynote"
     }
 
+    private static func preview(_ runningApp: NSRunningApplication) -> Bool {
+        // when opening multiple documents at once with apple Preview,
+        // one of the window will have level == 1 for some reason
+        return runningApp.bundleIdentifier == "com.apple.Preview"
+    }
+
     private static func openFlStudio(_ runningApp: NSRunningApplication, _ title: String?) -> Bool {
         // OpenBoard is a ported app which doesn't use standard macOS windows
         return runningApp.bundleIdentifier == "com.image-line.flstudio" && (title != nil && title != "")

src/api-wrappers/CGWindowID.swift

@@ -8,10 +8,6 @@ extension CGWindowID {
     func level() throws -> CGWindowLevel {
         var level = CGWindowLevel(0)
         CGSGetWindowLevel(cgsMainConnectionId, self, &level)
-        // in some weird cases, a window can spawn with level == 1, which is not even a publicly listed level
-        if level == 1 {
-            throw AxError.runtimeError
-        }
         return level
     }