FEATURE: Add same site cookie 'None' option to make cross domain systems possible (#9374)

FEATURE: Add same site cookie ‘None’ option to make cross domain systems possible (#9374)

Previously reverted in cb8f8de4, but can be re-applied now that Rack has been updated

diff --git a/config/site_settings.yml b/config/site_settings.yml
index d49bb0e..ea4bbd4 100644
--- a/config/site_settings.yml
+++ b/config/site_settings.yml
@@ -1382,7 +1382,8 @@ security:
       - Lax
       - Strict
       - Disabled
-    regex: "^(Lax|Strict|Disabled)$"
+      - None
+    regex: "^(Lax|Strict|Disabled|None)$"
   enable_escaped_fragments: true
   allow_index_in_robots_txt: true
   moderators_create_categories: false

GitHub sha: f2574736