Filter events are triggered when filters are set and a new query is run

[wrigleyDan]

Filter event tracking has a bug in Chorus.
In case a filter is set and a (new) query is entered, not only the query event is fired but also the brand filter event - although nothing has changed with the set of filters.

Steps to reproduce:

1. Go to http://chorus-opensearch-edition.dev.o19s.com:3000/
2. Select a filter, e.g. Philips as a brand filter
3. Open OS Dashboards in a new tab: http://chorus-opensearch-edition.dev.o19s.com:5601
4. Go to Dev Tools and execute the following query:

GET ubi_events/_search
{
  "query": {
    "match_all": {
      
    }
  }, "sort": [
    {
      "timestamp": {
        "order": "desc"
      }
    }
  ],
  "track_total_hits": true
}

You should see the latest event, namely the clicked brand filter.

5. Go to the Chrous UI tab and enter a query, e.g. coffee
6. Switch back to Dev Tools and observe multiple brand filter events although no brands were selected or deselcted.

Apparently, every query triggers a filter event if a filter already is selected.

It's also worth thinking about resetting the filters if a completely new query is entered vs. keeping the filters if the query is changed.