ExtensionManager: Hide the filter combobox in QtC 15

There is not much data to filter by, yet, in QtC 15. Therefore, we hide
the filter combobox for now.

Fixes: QTCREATORBUG-31751
Change-Id: I1acc14a27c57ddb432efe614d0c2a0817a57b8b2
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/plugins/extensionmanager/extensionsbrowser.cpp

@@ -525,6 +525,7 @@ ExtensionsBrowser::ExtensionsBrowser(ExtensionsModel *model, QWidget *parent)
                                          Tr::tr("Filter by: %1"));
     d->filterChooser->addItems(Utils::transform(SortFilterProxyModel::filterOptions(),
                                                 &SortFilterProxyModel::FilterOption::displayName));
+    d->filterChooser->hide(); // TODO: Unhide when ready. See QTCREATORBUG-31751
 
     d->sortChooser = new OptionChooser(":/extensionmanager/images/sort.png", Tr::tr("Sort by: %1"));
     d->sortChooser->addItems(Utils::transform(SortFilterProxyModel::sortOptions(),
@@ -556,11 +557,11 @@ ExtensionsBrowser::ExtensionsBrowser(ExtensionsModel *model, QWidget *parent)
             customMargins(0, VPaddingM, extraListViewWidth() + gapSize, VPaddingM),
         },
         Row {
-            d->filterChooser,
-            Space(HGapS),
             d->sortChooser,
+            d->filterChooser,
             st,
             settingsToolButton,
+            spacing(HGapS),
             customMargins(0, 0, extraListViewWidth() + gapSize, 0),
         },
         d->extensionsView,