Vaadin 25: cannot start demo

[javier-godoy]

Describe the bug

Found app shell configuration annotations in non AppShellConfigurator classes.
Please create a custom class implementing AppShellConfigurator and move the following annotations to it:
- @StyleSheet from com.flowingcode.vaadin.addons.orgchart.OrgchartDemoView

Expected behavior

No response

Minimal reproducible example

No response

Add-on Version

5.2.0

Vaadin Version

25.0.0.alpha-14

Additional information

No response