[jakduch]

What changed

• use a unique hostgroup name for every test attempt
• wait for the browser redirect after submitting the form
• verify the created record only after the redirect completes

Why

The same timeout occurred independently in #11280 and #11284. The test queried the database before synchronizing with the browser submission and reused a fixed name across retries, so a late submission could poison a later attempt with a duplicate name.

Verification

• ruby -c test/integration/hostgroup_js_test.rb
• git diff --check

The full Rails integration test could not be run locally because the checkout does not have the required Ruby bundle installed.

[ofedoren]

Seems fine to me, thanks @jakduch !

Worst case, we'll revisit this one.