When builtin:: symbols be implemented?

[rwp0]

> perlbrew exec --with 5.35.11 perl -E 'say for sort keys %builtin::'
blessed
ceil
created_as_number
created_as_string
false
floor
import
indexed
is_bool
is_weak
refaddr
reftype
trim
true
unweaken
weaken

When will builtin:: functions along with builtin pragma for exporting them be implemented?

Currently they are highlighted which means something is wrong:

New pragma, new keywords, and Perl v5.36 is coming already very soon :-)

[hurricup]

Usually i'm doing new features after perl release

[rwp0]

Glad to see this issue opened #2500