www/bluefish: Fix build on clang16

Use G_CALLBACK() macro to silence incompatible function pointer warnings
and disables any argument checks.

Sugested by: dim
See also: https://lists.freebsd.org/archives/freebsd-ports/2023-July/004036.html
MFH: 2023Q3

(cherry picked from commit e95c4bea425b3e3c49b63e0cf4eff24af40c574b)