[a11y] Make dialog icon not important for accessibility

Bug: 207320823
Test: manual (see screen record on the bug)
Change-Id: Ic9eee299dafc94f5c554b388210944d7737908cb
diff --git a/res/values/styles.xml b/res/values/styles.xml
index de1f123..de3f629 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -68,6 +68,7 @@
     <style name="MaterialAlertDialogIconStyle"
            parent="@style/MaterialAlertDialog.MaterialComponents.Title.Icon.CenterStacked">
         <item name="android:tint">?android:attr/colorAccent</item>
+        <item name="android:importantForAccessibility">no</item>
         <item name="android:layout_width">@dimen/picker_profile_dialog_icon_width</item>
         <item name="android:layout_height">@dimen/picker_profile_dialog_icon_height</item>
     </style>