[native] Fix reacting to robotext when sidebar is disabled

Summary:
While working on the parent diffs, I noticed an issue where pressing on a robotext did nothing.

Turns out this is not a recent regression introduced by my changes, and is an issue that has been present since we refactored how the reaction options appear.

The issue is that we had a condition that exited if visibleEntryIDs.length === 0, but our reaction options aren't rendered via visibleEntryIDs.

This diff addresses it by adding && !canCreateReactionFromMessage to the check.

Depends on D13708

Test Plan: Confirm that on native, when I press on a robotext in a sidebar, I'm able to see options to react

Reviewers: tomek, angelika, kamil

Reviewed By: kamil

Differential Revision: https://phab.comm.dev/D13709