OTWO-7667 Cache changes in people page

Author: bd-vaibhav

app/controllers/people_controller.rb

@@ -12,7 +12,8 @@ def rankings; end
   private
 
   def query_or_cache_exist
-    params[:query].blank? && Rails.cache.exist?('people_index_page') && Rails.cache.exist?('people_index_page_device')
+    key = only_device? ? 'people_index_page_device' : 'people_index_page'
+    params[:query].blank? && Rails.cache.exist?(key)
   end
 
   def find_index_people