Stock API filtering fix (#4350)

* Improve filtering options for StockItem list

- Make use of StockFilter introspection

* Remove outdated filter

* remove outdated "max_results" parameter

* Fix cascade issue for stocklist API

* Add relationship filters to the StockItemFilter

* Fix filtering by 'status' and 'allocated'

* Refactor 'customer' and 'expired' filters

* Cleanup

* Adds unit test for top-level stock location filtering

InvenTree/templates/js/translated/stock.js

@@ -2742,7 +2742,7 @@ function loadInstalledInTable(table, options) {
     table.inventreeTable({
         url: '{% url "api-stock-list" %}',
         queryParams: {
-            installed_in: options.stock_item,
+            belongs_to: options.stock_item,
             part_detail: true,
         },
         formatNoMatches: function() {