emails: Add corporate_enabled to context for emails.

In commit fc58c35c0, we added a check in various emails for the
settings.CORPORATE_ENABLED value, but that context is only always
included for views/templates with a request.

Here we add that to common_context, which is often used when there
is not a request (like with emails). And we manually add it to the
email context in various cases when there is not a user account to
call with common_context: new user invitations, registration emails,
and realm reactivation emails.

zerver/actions/invites.py

@@ -59,6 +59,7 @@ def do_send_confirmation_email(
         "referrer_email": referrer.delivery_email,
         "activate_url": activation_url,
         "referrer_realm_name": referrer.realm.name,
+        "corporate_enabled": settings.CORPORATE_ENABLED,
     }
     send_email(
         "zerver/emails/invitation",

zerver/actions/realm_settings.py

@@ -481,7 +481,12 @@ def do_send_realm_reactivation_email(realm: Realm, *, acting_user: Optional[User
         event_type=RealmAuditLog.REALM_REACTIVATION_EMAIL_SENT,
         event_time=timezone_now(),
     )
-    context = {"confirmation_url": url, "realm_uri": realm.uri, "realm_name": realm.name}
+    context = {
+        "confirmation_url": url,
+        "realm_uri": realm.uri,
+        "realm_name": realm.name,
+        "corporate_enabled": settings.CORPORATE_ENABLED,
+    }
     language = realm.default_language
     send_email_to_admins(
         "zerver/emails/realm_reactivation",

zerver/context_processors.py

@@ -47,6 +47,7 @@ def common_context(user: UserProfile) -> Dict[str, Any]:
         "external_url_scheme": settings.EXTERNAL_URI_SCHEME,
         "external_host": settings.EXTERNAL_HOST,
         "user_name": user.full_name,
+        "corporate_enabled": settings.CORPORATE_ENABLED,
     }
 
 

zerver/views/registration.py

@@ -692,6 +692,7 @@ def send_confirm_registration_email(
         context={
             "create_realm": (realm is None),
             "activate_url": activation_url,
+            "corporate_enabled": settings.CORPORATE_ENABLED,
         },
         realm=realm,
         request=request,