JSX Objects are not loaded in the Rendered Diff view

Steps to reproduce:

1. Have a macro that has some JS to modify the view. The JS should be added using JSX objects
2. Add the macro on a page
3. Modify the macro content
4. Check the differences between versions, using the rendered diff view

Expected result: both versions of the macro (before and after) have the JS code executed

Actual result: the JS is not executed

This can lead to inconsistencies in what the user would expect to see in the rendered diff view.
This usecase can be tested with the MathJax Macro.