set android:fitsSystemWindows="true" for terminal app

to fix overlapping between action bar and layout

Bug: 357827587
Test: launch app
Change-Id: I3cb9ff3b87f1c3bde5540df29a5f3b46290e3934
diff --git a/android/TerminalApp/res/layout/activity_headless.xml b/android/TerminalApp/res/layout/activity_headless.xml
index 2a640f3..3fe5271 100644
--- a/android/TerminalApp/res/layout/activity_headless.xml
+++ b/android/TerminalApp/res/layout/activity_headless.xml
@@ -5,6 +5,7 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
+    android:fitsSystemWindows="true"
     tools:context=".MainActivity">
     <TextView
         android:id="@+id/ip_addr_textview"