Fix focus and qml parenting with qml root

resources/qml/PrivacyScreen.qml

resources/qml/device-verification/DeviceVerification.qml

resources/qml/dialogs/ImagePackEditorDialog.qml

resources/qml/dialogs/ImagePackSettingsDialog.qml

resources/qml/dialogs/InputDialog.qml

resources/qml/dialogs/InviteDialog.qml

resources/qml/dialogs/JoinRoomDialog.qml

resources/qml/dialogs/PhoneNumberInputDialog.qml

resources/qml/dialogs/RawMessageDialog.qml

resources/qml/dialogs/ReadReceipts.qml

resources/qml/dialogs/RoomDirectory.qml

resources/qml/dialogs/RoomMembers.qml

resources/qml/dialogs/RoomSettings.qml

resources/qml/dialogs/UserProfile.qml

src/ChatPage.cpp

src/ChatPage.h

src/MainWindow.cpp

src/MainWindow.h

src/timeline/TimelineModel.cpp

src/timeline/TimelineViewManager.cpp