When condition card is collapsed, there are only showing icons.
Accessibility can't speak meaningful information after tap it. Use
existed condition expend string to assign content description.
Fixes:
128897141
Test: manual
Change-Id: I49bc1ee8af424e90aac6555829c545914355862b
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
+ android:contentDescription="@string/condition_expand_show"
style="@style/ContextualCardStyle">
<LinearLayout