Please never say “latest” but always the exact version. Especially when dealing with betas, “latest” isn‘t specific enough, can be wrong (e.g. auto-updater hasn’t kicked in), and makes it impossible for anyone else to know if their version matches the report. To receive informed help, it is imperative to provide precise information.
Unlikely. Ventura is a beta, things will be broken. On beta 1, I found and reported settings URLs which outright opened the wrong pane.
The dictionary is there but uses the old name (System Preferences, not System Settings) and doesn’t work. x-apple.systempreferences: still works to open panes, as does opening them directly from /System/Library/PreferencePanes/.