Add missing Theme.DeviceDefault.Dialog on TV

To ensure that we have TV themed dialogs we should add this. It is being
used by Theme.DeviceDefault.System.Dialog as well as other SystemUI
themes.

Bug: 264981854
Test: manual - start a screen recording and check that the dialog looks
good and TV themed

Change-Id: I275ffaf2df5c394a2a12e547f0c0c249d88d0d36
diff --git a/core/res/res/values-television/themes_device_defaults.xml b/core/res/res/values-television/themes_device_defaults.xml
index 9d0e5221..7cda99a 100644
--- a/core/res/res/values-television/themes_device_defaults.xml
+++ b/core/res/res/values-television/themes_device_defaults.xml
@@ -14,6 +14,7 @@
      limitations under the License.
 -->
 <resources>
+    <style name="Theme.DeviceDefault.Dialog" parent="Theme.Leanback.Dialog" />
     <style name="Theme.DeviceDefault.Dialog.Alert" parent="Theme.Leanback.Dialog.Alert" />
     <style name="Theme.DeviceDefault.Dialog.AppError" parent="Theme.Leanback.Dialog.AppError" />
     <style name="Theme.DeviceDefault.Light.Dialog.Alert" parent="Theme.Leanback.Dialog.Alert" />