Fix parameter validation in our custom devise strategies (#33754)

lib/devise/strategies/two_factor_ldap_authenticatable.rb

@@ -23,7 +23,7 @@ module Devise
       protected
 
       def valid_params?
-        params[scope] && params[scope][:password].present?
+        params[scope].is_a?(Hash) && params[scope][:password].present?
       end
     end
   end

lib/devise/strategies/two_factor_pam_authenticatable.rb

@@ -22,7 +22,7 @@ module Devise
       protected
 
       def valid_params?
-        params[scope].respond_to?(:[]) && params[scope][:password].present?
+        params[scope].is_a?(Hash) && params[scope][:password].present?
       end
     end
   end