bug#56714: 28.1.90; html-mode-map binds M-o

[Daniel Mendler]

I took another look at the Emacs 28 news entry. As I understood it, the
M-o binding was removed everywhere. But it seemed that at the same time
you introduced M-o as local binding in the html-mode-map and the
enriched-mode-map. This is not obvious from the news entry.

At least this explains your reaction that the feature is working as
intended. However this looks like a bad compromise given that the
situation is now even worse than before, since the users have to move
two keybindings now instead of a single one if they want to get rid of
M-o consistently.

Daniel