[native] Remove TooltipInlineEngagement from RobotextMessageTooltipButton

Summary:
This was introduced first in D4825 to solve a problem having to do with InlineEngagement appearing over the message.

But for robotext messages, we don't overlap the display of InlineEngagement with the message. As such, this problem doesn't exist for robotext messages, and doesn't need to be solved.

Depends on D13675

Test Plan: Remove TooltipInlineEngagement from text messages and multimedia messages. Observe that the issue described in D4825 appears now. Do the same for robotext messages, and confirm that the issue does not appear.

Reviewers: tomek

Reviewed By: tomek

Differential Revision: https://phab.comm.dev/D13676