Test: file path labels

[isidorn]

Refs: #51446

• Win @RMacfarlane
• Linux @alexandrudima
• Macos: @sandy081
• remotehub (use this extension https://github.com/eamodio/vscode-remotehub): @rebornix

Complexity: 2

We have changed how we render file paths in the workbench UI. Verify:

• Paths are either shown absolute or relative to the workspace root. Wherever they are shown absolute (explorer hover, no tabs title) make sure they are consistently shown (you can compare to stable). Same for relative (open editors, tabs title are, callstack view) - they should be shown consistently
• In a multi root workspace verify that the workspace name is shown as a prefix
• For the remote setup verify that no "ugly" part of the uri is shown but that enough information is still available
• Verify Copy Path command in explorer context menu works as expected

[sandy081]

Good work