[RAM] Allow conditional action for rule type with AAD (#167556)

## Summary

With this change, we will let rule type to use conditional action if the
rule type create alert in the alert index.

We will need to some clean up on these two fields `HasAlertsMappings`
and `hasFieldsForAAD` in future release.
(https://github.com/elastic/kibana/issues/167558)

x-pack/plugins/stack_connectors/public/connector_types/slack/action_form.test.tsx

@@ -164,6 +164,7 @@ describe('ActionForm - Slack API Connector', () => {
 
     const testProps = {
       ...baseProps,
+      hasAlertsMappings: false,
       actions: testActions,
     };
 

x-pack/plugins/triggers_actions_ui/public/application/sections/action_connector_form/action_type_form.tsx

@@ -358,7 +358,8 @@ export const ActionTypeForm = ({
     setActionGroupIdByIndex &&
     !actionItem.frequency?.summary;
 
-  const showActionAlertsFilter = hasFieldsForAAD || producerId === AlertConsumers.SIEM;
+  const showActionAlertsFilter =
+    hasFieldsForAAD || producerId === AlertConsumers.SIEM || hasAlertsMappings;
 
   const accordionContent = checkEnabledResult.isEnabled ? (
     <>