Fixes OverviewActionsView height sizing.

By fixing the action buttons container height and allowing wrap content on overviewActionsView all views have enough room to be displayed and actions button container height can be calculated.
Bug: 182854439
Test: Manual

Change-Id: I34516ba42430d8fe6774e10215dd8ac1127920c8
diff --git a/quickstep/overview_ui_overrides/res/layout/overview_actions_container.xml b/quickstep/overview_ui_overrides/res/layout/overview_actions_container.xml
index d15a2d2..1da25e7 100644
--- a/quickstep/overview_ui_overrides/res/layout/overview_actions_container.xml
+++ b/quickstep/overview_ui_overrides/res/layout/overview_actions_container.xml
@@ -16,14 +16,14 @@
 -->
 <com.android.quickstep.views.OverviewActionsView xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="@dimen/overview_actions_height"
+    android:layout_height="wrap_content"
     android:layout_gravity="center_horizontal|bottom">
 
     <LinearLayout
         android:id="@+id/action_buttons"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_gravity="center"
+        android:layout_height="@dimen/overview_actions_height"
+        android:layout_gravity="bottom|center_horizontal"
         android:orientation="horizontal">
 
         <Space