message: docs: adding a note on ICU processing to Ivy compatibility guide
  PR Close
diff: @@ -60,3 +60,5 @@ The following changes will be visible more rarely, as they mostly deal in edge c
  - It's no longer possible to overwrite lifecycle hooks with mocks on directive instances for testing (instead, modify the lifecycle hook on the directive type itself).
  - Special injection tokens (e.g. `TemplateRef` or `ViewContainerRef`) return a new instance whenever they are requested (previously, instances of special tokens were shared if requested on the same node). This primarily affects tests that do identity comparison of these objects.
  +
  +- ICU parsing happens at runtime, so only text, HTML tags and text bindings are allowed inside ICU cases (previously, directives were also permitted inside ICUs).
  \ No newline at end of file
  