Fixes #38794 - Do not truncate dynflow tables

in JS integration tests.

This could cause some tests to randomly fail due to dynflow's records being
wiped and dynflow reacting to that by terminating itself, along with the entire
process where the tests run.

Author: adamruzicka

test/integration_test_helper.rb

@@ -392,7 +392,7 @@ def with_controller_caching(*controller_klasses)
 
 class IntegrationTestWithJavascript < ActionDispatch::IntegrationTest
   def database_cleaner_strategy
-    :truncation
+    [:truncation, except: %w[dynflow_coordinator_records dynflow_schema_info]]
   end
 
   def before_setup