Draft: Issue #3551518 by berliner: Add regression test for recursive entity comparison fatal
Test-only MR for #3551518.
This adds a regression test that demonstrates the fatal error caused by loose object comparison in layout_builder_ipe_entity_view_alter().
Expected result for this test-only MR:
- The test should fail with
Nesting level too deep - recursive dependency?.
The fix will be provided in a separate MR.