No issue: Restore two deprecated deleted strings

app/src/main/res/values/strings.xml

@@ -1471,4 +1471,9 @@
     <!-- depcrecated: text for the firefox account onboarding card header
     The first parameter is the name of the app (e.g. Firefox Preview) -->
     <string name="onboarding_firefox_account_header">Get the most out of %s.</string>
+
+    <!-- Deprecated: No Open Tabs Message Header -->
+    <string name="no_collections_header1">Collect the things that matter to you</string>
+    <!-- Deprecated: Label to describe what collections are to a new user without any collections -->
+    <string name="no_collections_description1">Group together similar searches, sites, and tabs for quick access later.</string>
 </resources>