In AllApps search mode, only consume touch over visible container

Bug: 236360930
Test: Tap on deadzone to dismiss AllApps in search mode
Test: touch outside recycler view inside container, doesn't swipe left/right
Change-Id: I18498ea50f217231c3bb4489d6d9e95fc0e7da53

src/com/android/launcher3/allapps/BaseAllAppsContainerView.java

@@ -304,7 +304,8 @@ public abstract class BaseAllAppsContainerView<T extends Context & ActivityConte
             mTouchHandler.handleTouchEvent(ev, mFastScrollerOffset);
             return true;
         }
-        if (isSearching()) {
+        if (isSearching()
+                && mActivityContext.getDragLayer().isEventOverView(getVisibleContainerView(), ev)) {
             // if in search state, consume touch event.
             return true;
         }