fix: some app is active but can not get windows

workaround: sometimes some apps are launched and are actived but OS returns the windows.count == 0. we wait for a moment. For example: Bear.app. At this scenario, AXUIElementCopyAttributeValue(self, kAXWindowsAttribute, &value) returns success but  AXUIElementCopyAttributeValue(self, kAXPositionAttribute, &value) and AXUIElementCopyAttributeValue(self, kAXSizeAttribute, &value) return attributeUnsupported. After we wait for a moment, all things run well.

src/logic/Application.swift

@@ -117,6 +117,11 @@ class Application: NSObject {
                     if group == nil && !self.wasLaunchedBeforeAltTab && CGSSpaceGetType(cgsMainConnectionId, Spaces.currentSpaceId) == .fullscreen {
                         throw AxError.runtimeError
                     }
+                    // workaround: sometimes some apps are launched and are actived but OS returns the windows.count == 0. we wait for a moment
+                    // for example: Bear.app
+                    if group == nil && !self.wasLaunchedBeforeAltTab && self.runningApplication.isActive {
+                        throw AxError.runtimeError
+                    }
                 }
             }
         }