DEV: Convert min_trust_to_edit_wiki_post to groups (#24766)

This change converts the min_trust_to_edit_wiki_post site setting to edit_wiki_post_allowed_groups.

See: https://meta.discourse.org/t/283408

Hides the old setting
Adds the new site setting
Add a deprecation warning
Updates to use the new setting
Adds a migration to fill in the new setting if the old setting was changed
Adds an entry to the site_setting.keywords section
Updates tests to account for the new change
After a couple of months, we will remove the email_in_min_trust setting entirely.

Internal ref: /t/117248

lib/site_settings/deprecated_settings.rb

@@ -19,6 +19,7 @@ module SiteSettings::DeprecatedSettings
       "3.3",
     ],
     ["email_in_min_trust", "email_in_allowed_groups", false, "3.3"],
+    ["min_trust_to_edit_wiki_post", "edit_wiki_post_allowed_groups", false, "3.3"],
   ]
 
   def setup_deprecated_methods