Slightly lower icon shadow insets to avoid accidental shrinking or padding

Bug: 350758155
Test: locally
Flag: com.android.launcher3.use_new_icon_for_archived_apps
Change-Id: I5d0396c3e4710873ff797a35b97fad7e79a14495
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index 5ba00c0..f8c075f 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -311,7 +311,7 @@
     <dimen name="blur_size_medium_outline">2dp</dimen>
     <dimen name="blur_size_click_shadow">4dp</dimen>
     <dimen name="click_shadow_high_shift">2dp</dimen>
-    <dimen name="app_title_icon_shadow_inset">1dp</dimen>
+    <dimen name="app_title_icon_shadow_inset">0.5dp</dimen>
 
     <!-- Pending widget -->
     <dimen name="pending_widget_min_padding">8dp</dimen>