Avoid changing Custom properties tab automatically every time filter changes

Follow-up to #3719

The previous behavior was predicated on:
- Allowing a single custom property filter
- Allowing breaking down only by the chosen custom property filter

Now these restrictions are removed the previous auto-switching just becomes annoying

Author: macobo

assets/js/dashboard/stats/behaviours/props.js

@@ -1,4 +1,4 @@
-import React, { useCallback, useState, useEffect } from "react";
+import React, { useCallback, useState } from "react"
 import ListReport from "../reports/list";
 import Combobox from '../../components/combobox'
 import * as api from '../../api'
@@ -15,10 +15,6 @@ export default function Properties(props) {
 
   const [propKey, setPropKey] = useState(choosePropKey())
 
-  useEffect(() => {
-    setPropKey(choosePropKey())
-  }, [query.filters.goal, query.filters.props])
-
   function singleGoalFilterApplied() {
     const goalFilter = query.filters.goal
     if (goalFilter) {