Title missing from revisions dialog

[sam (Sam Saffron)]

If you look at revisions of topic for post #1 where you only edited “body” you can not see the title, which is confusing

@eviltrout @zogstrip not sure if this is a recent regression, it could be.

[zogstrip (Régis Hanol)]

This actually never worked

https://github.com/discourse/discourse/commit/05890436dfc2b18129c5fbc902f924626c95cb26