Fix clipped button shadow

app/src/main/java/com/hippo/ehviewer/widget/ImageSearchLayout.java

@@ -85,6 +85,7 @@ public final class ImageSearchLayout extends LinearLayout implements View.OnClic
         setOrientation(VERTICAL);
         setDividerDrawable(context.getResources().getDrawable(R.drawable.spacer_keyline));
         setShowDividers(SHOW_DIVIDER_MIDDLE);
+        setClipChildren(false);
         setClipToPadding(false);
         LayoutInflater.from(context).inflate(R.layout.widget_image_search, this);