Optional route path when used with query params

[Panman82]

With ember {{link-to}}, the route path can be omitted when used in conjunction with query params.

{{#link-to (query-params foo="bar")}}Baz{{/link-to}}
{{link-to "Baz" (query-params foo="bar")}}

I do this all the time in a project but ran into issues when trying to convert some of them to the {{href-to}} format.