AnalyticalTable: First level is not aligned in tree table mode

[ccflower]

Describe the bug
When AnalyticalTable is in tree table mode, for the root level, the rows that can be expanded don't keep aligned on the left with the rows that can't be expanded.

Isolated Example
https://codesandbox.io/s/cool-browser-hvkwp?file=/src/App.js

To Reproduce
Steps to reproduce the behavior:

1. check the table for the first level and the second level
2. issue: the first level is not aligned

Expected behavior
The first level should keep aligned on the left, consistent with UI5's ### sap.ui.table.Table

Screenshots

UI5 Web Components for React Information
@ui5/webcomponents version: 1.0.0-rc.14 - latest
@ui5/webcomponents-react version: 0.16.6 - latest
Operating System:
Browser: Chrome/Firefox

Additional context

[ui5-webcomponents-react-bot]

🎉 This issue has been resolved in version v0.18.0 🎉

The release is available on v0.18.0

Your semantic-release bot 📦🚀