feat: wip clear confidential address data

clear_confidential_address_data.rb

@@ -0,0 +1,42 @@
+ADDRESS_FIELDS_TO_REMOVE_FOR_CONFIDENTIAL_SCHEME = %w[
+      uprn
+      uprn_known
+      uprn_confirmed
+      uprn_selection
+      address_line1
+      address_line2
+      town_or_city
+      county
+      postcode_full
+      postcode_known
+      address_line1_input
+      postcode_full_input
+      address_line1_as_entered
+      address_line2_as_entered
+      town_or_city_as_entered
+      county_as_entered
+      postcode_full_as_entered
+      la_as_entered
+
+      is_la_inferred
+      la
+      address_search_value_check
+    ].freeze
+
+
+scope = LettingsLog
+          .joins(:scheme)
+          .where(schemes: { sensitive: true })
+          .where(
+            ADDRESS_FIELDS_TO_REMOVE_FOR_CONFIDENTIAL_SCHEME.map { |field| "#{LettingsLog.table_name}.#{field} IS NOT NULL" }.join(" OR ")
+          )
+
+scope.find_each do |log|
+  log.reset_address_fields!
+  log.uprn_selection = nil
+  log.postcode_known = nil
+
+  log.la = log.la
+
+  log.save!
+end