Update message shown for unattended update

Fixes: 293477849
Test: verified manually,
  1. Enable the feature flag
  2. Unlock the device
  3. Run `adb shell cmd recovery request-lskf ota`
  4. Suspend the device and go to the bouncer
  5. New message should be shown
Change-Id: I1fe0718de43769424dd7eeff65faec935caea89d
diff --git a/packages/SystemUI/res-keyguard/values/strings.xml b/packages/SystemUI/res-keyguard/values/strings.xml
index badad58..28b5870 100644
--- a/packages/SystemUI/res-keyguard/values/strings.xml
+++ b/packages/SystemUI/res-keyguard/values/strings.xml
@@ -192,7 +192,7 @@
     <string name="kg_prompt_after_user_lockdown_pattern">Pattern is required after lockdown</string>
 
     <!-- Message shown to prepare for an unattended update (OTA). Also known as an over-the-air (OTA) update.  [CHAR LIMIT=70] -->
-    <string name="kg_prompt_unattended_update">Update will install during inactive hours</string>
+    <string name="kg_prompt_unattended_update">Update will install when device not in use</string>
 
     <!-- Message shown when primary authentication hasn't been used for some time.  [CHAR LIMIT=70] -->
     <string name="kg_prompt_pin_auth_timeout">Added security required. PIN not used for a while.</string>