Fix spacing issue for dark_mode_section

Fix spacing issue by introducing minHeight to 0dp to truly wrap the
Switch widget.

Test: https://screenshot.googleplex.com/9EPrEw4BZ7mAfNa
Bug: 238297168
Change-Id: Iaa432dbe3c309b50c59c69651102db2e8ef5714a
diff --git a/res/layout/dark_mode_section_view.xml b/res/layout/dark_mode_section_view.xml
index b9ab0e3..e1b4b81 100644
--- a/res/layout/dark_mode_section_view.xml
+++ b/res/layout/dark_mode_section_view.xml
@@ -40,6 +40,7 @@
         android:background="@null"
         android:clickable="false"
         android:focusable="false"
+        android:minHeight="0dp"
         style="@style/Switch.SettingsLib" />
 
 </com.android.customization.picker.mode.DarkModeSectionView>