Change task view / all apps/ widgets / folder radius to dialogCornerRadius

Bug: 123985787
Change-Id: Iaa8088beb51d37dba90d57ad065f9eac0dd46270
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index 7804133..469b176 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -235,4 +235,8 @@
 <!-- Hints -->
     <dimen name="chip_hint_height">26dp</dimen>
     <dimen name="chip_hint_bottom_margin">194dp</dimen>
+
+<!-- Theming related -->
+    <dimen name="default_dialog_corner_radius">8dp</dimen>
+
 </resources>