Setup hotfix: Modify ModalLayout

[pnv2003]

You can use ModalLayout to create a full-screen modal. Remember to wrap it inside a Portal, because it is literally a Modal.

<ModalLayout modalVisible={...} setModalVisible={...}>
    <Appbar.Header>
        {/* YOUR APPBAR HERE*/}
    </Appbar.Header>
    <ScrollView> {/* or View */}
        {/* YOUR MODAL CONTENT */}
    </ScrollView>
</ModalLayout>