workspace: open recent workspace... menu displays incorrect icon for current workspace

[vince-fugnitto]

Bug Description:

The Workspace: Open Recent Workspace... quick-input displays an incorrect icon for the currently opened workspace folder when using the theia-file-icon theme. For other themes the icon is displayed properly.

recent-workspaces.mp4

The changes are using the WorkspaceUriLabelProvider which was updated for breadcrumbs support (#9920), and its likely that the iconClass has no associated icon (rootfolder-icon):

theia/packages/workspace/src/browser/workspace-uri-contribution.ts

Lines 41 to 47 in 39fc27c

	getIcon(element: URI | URIIconReference | FileStat): string {
	const uri = this.getUri(element);
	if (uri && this.workspaceVariable.getWorkspaceRootUri(uri)?.isEqual(uri)) {
	return 'rootfolder-icon';
	}
	return super.getIcon(this.asURIIconReference(element));
	}

cc @colin-grant-work

Steps to Reproduce:

1. start the application, and ensure that there is a recent workspace history (open multiple workspaces)
2. trigger F1 > Open Recent Workspace...
3. identify that the icon for the current workspace is not displayed