File browser indentation setting behaves differently compared to VS Code

Bug Description:

Changing the width of the tree indentation in the file browser behaves differently compared to VS Code. See screenshots using the following setting:

"workbench.tree.indent": 25,

VS Code:

Theia:

Notice how the indentation is significantly different and that the vertical line is offset to the right in Theia. This line is not affected in VS Code upon changing the setting. E.g. with 16:

Whereas in Theia it will move along with the indentation:

Steps to Reproduce:

1. Open a folder with some sub-folders and files in it
2. Add the workbench.tree.indent setting to .vscode/settings.json
3. Compare how it displays in Theia compared to VS Code

Additional Information

• Operating System: MacOS
• Theia Version: 1.75