fix ssvmsg MessageIDs to map to a different role

[Zacholme7]

for test1 and test2 the role is either invalid, or maps to committee.

We differentiate between a committee and validator duty executor and enforce that you can only access the public key through the duty executor if the role is not committee. This pr modifies the message ids so that they map to a different role.

Please let me know if we are too strict here. Thanks!

[GalRogozinski]

Hey!

Thanks for contributing!
As you may have guessed from folder name the jsons are generated.
Can you please:

1. revert
2. change types/spectest/tests/ssvmsg/msg_id_belongs.go
3. change msg_id_doesnt_belong.go
4. make generate-jsons (there's also a way to not run it for the whole project, but always safer to do it this way)

[GalRogozinski]

Thanks for the contribution!