Fix support for dbconsole on Rails edge

Ref:
- Move dbconsole logic to Active Record connection adapter: rails/rails@4bcb8e4 rails/rails#46093
- Use adapter_class instead of connection_class for adapters: rails/rails@5bb357f rails/rails#46166

lib/active_record/connection_adapters/chronomodel_adapter.rb

@@ -2,6 +2,9 @@
 
 module ActiveRecord
   module ConnectionHandling
+    def chronomodel_adapter_class
+      ConnectionAdapters::PostgreSQLAdapter
+    end
 
     # Install the new adapter in ActiveRecord. This approach is required because
     # the PG adapter defines +add_column+ itself, thus making impossible to use

lib/chrono_model.rb

@@ -77,7 +77,7 @@ def chrono?
   prepend ChronoModel::Patches::Batches::BatchEnumerator
 end
 
-if defined?(Rails::DBConsole)
+if defined?(Rails::DBConsole) && Rails.version < '7.1'
   Rails::DBConsole.instance_eval do
     if Rails.version < '6.1'
       prepend ChronoModel::Patches::DBConsole::Config