Update preference for remoteRecipes
@cypherpunks1 reported that `signon.recipes.remoteRecipesEnabled` is outdated we should use `signon.recipes.remoteRecipes.enabled`, instead. (See [Bug 1700412](https://bugzilla.mozilla.org/show_bug.cgi?id=1700412) and https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/40783#note_2838323).
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