Wrong agreggation filter counts when unclicked

1. setup a pageprovider with an aggregate on the document type
2. make the search form and results appear in a tab
3. create a document of the same type
4. unfold the filter
5. observe the params are empty (see notyetclicked.png)
6. in the filter click the aggregate once
7. observe the JSON on the right contains 1 result (see clicked.png)
8. fold the filter
9. observe the count is 1 (see clicked2.png)
10. unfold the filter
11. uncheck the aggregate (see unclicked.png)
12. fold the filter
13. observe the count is 1 (see unclicked2.png)

Expected behavior: the count should be 0 and not visible
Pre-analysis: this seems to be due to the following line
https://github.com/nuxeo/nuxeo-web-ui/blob/10.10/elements/search/nuxeo-results-view.html#L302
When it has never been clicked then it works but once one or more aggregates have been clicked, the params are set with a length of 0.
Suggestion: on top of checking if the params are empty, it should check the length of each aggregates. If they are all equal to 0 then the count should be 0 and not be displayed.