"Warning: Cannot define an alias that overrides the built-in command 'revert'"

[zx8]

Using 514a009

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While the discussion to rename jj backout is still ongoing and no firm decisions have been made, I'm preparing for the outcome that my preferred name of jj revert is not chosen as the replacement.

To that end, I tried to alias jj backout to jj revert, and was unable to:

$ jj revert
Not a real subcommand; consider `jj backout` or `jj restore`

$ jj config set --user aliases.revert '["backout"]'

$ jj status
Warning: Cannot define an alias that overrides the built-in command 'revert'
<snip>

[yuja]

It's kinda the same issue as #5335. jj revert is implemented as a real command, so it can't be overridden by user alias.