Add package specifiers for non-sbcl cl-protobuf json conversion caode
Add package specifiers for non-sbcl cl-protobuf json conversion caode

The cl-protobuf json conversion code is is missing package specifiers
for non-sbcl code. Add them.

PiperOrigin-RevId: 329302450

qitab/cl-protobufs,qitab/cl-protobufs