Sharesheet - Adjust button bar insets

Button bar insets were set before the inset callback. Add a call to
layout the button bar during the inset callback.

Bug: 134472146
Test: Steps from defect
Change-Id: I0246f06315cd05343002071dd6d217d41e0059ca
diff --git a/core/java/com/android/internal/app/ResolverActivity.java b/core/java/com/android/internal/app/ResolverActivity.java
index 0a01beb..9573ac0 100644
--- a/core/java/com/android/internal/app/ResolverActivity.java
+++ b/core/java/com/android/internal/app/ResolverActivity.java
@@ -398,6 +398,8 @@
                 mSystemWindowInsets.bottom));
         ((ListView) mAdapterView).addFooterView(mFooterSpacer);
 
+        resetButtonBar();
+
         return insets.consumeSystemWindowInsets();
     }