Revert "This is the default since Firefox 121."

I'm back at using Firefox ESR to avoid using multiple Debian repos, so
I'm back with this bug.

This reverts commit af43f329d9.

.profile

@@ -21,6 +21,8 @@ if [ -d "$HOME/bin" ] ; then
     PATH="$HOME/bin:$PATH"
 fi
 
+export MOZ_ENABLE_WAYLAND=1  # See https://bugzilla.mozilla.org/show_bug.cgi?id=1789602
+
 # set PATH so it includes ~/.local/bin if it exists
 if [ -d "$HOME/.local/bin" ] ; then
     PATH="$PATH:$HOME/.local/bin"