Reuse jira_issues_integration_available method

ee/app/helpers/ee/services_helper.rb

@@ -15,7 +15,7 @@ module EE
 
       if integration.is_a?(JiraService)
         form_data.merge!(
-          show_jira_issues_integration: @project&.feature_available?(:jira_issues_integration).to_s,
+          show_jira_issues_integration: @project&.jira_issues_integration_available?.to_s,
           show_jira_vulnerabilities_integration: integration.jira_vulnerabilities_integration_available?.to_s,
           enable_jira_issues: integration.issues_enabled.to_s,
           enable_jira_vulnerabilities: integration.jira_vulnerabilities_integration_enabled?.to_s,