Regression in Fish 4: the `test` command doesn't work with parenthesis anymore

[bugnano]

I'm using Fish 4.0.1 on Fedora 42.

Before upgrading to Fedora 42 I was using Fedora 40, with the old C++-based fish shell.

In the old shell I used the command

if test \( -f /usr/bin/fdfind \) -a \( ! -f /usr/bin/fd \)

in my config file and everything worked fine.

Also, note that this syntax is still documented in Fish 4.0.1

However, after upgrading to Fedora 42, Fish 4.0.1 complains with:

test: Expected a combining operator like '-a' at index 4
( -f /usr/bin/fdfind ) -a ( ! -f /usr/bin/fd )
                     ^
~/.config/fish/config.fish (line 211): 
if test \( -f /usr/bin/fdfind \) -a \( ! -f /usr/bin/fd \)
   ^
from sourcing file ~/.config/fish/config.fish
	called during startup