Steps to reproduce:

1. Create LLD rule
2. Create any item prototype - master item
3. Create dependent item prototype -> type: dependent, type of information -> binary, master item: item prototype created in #2
4. Open item prototype list
5. Expand context menu for the item prototype with type of information -> binary
6. Observe the available options.

Result:
Option create trigger prototype is available.
See screenshot:

Expected:
As it is not possible to create triggers with data type = binary, the context menu "Create trigger prototype" should be disabled for item prototypes with binary data type (Same as it is for regular items).