fix: all prefixes excluded from subject placeholder

[storageddd]

This PR fixes subject placeholder/default value from previous commit message.

As it was before Previous message: type(scope): TICKET-123 Subject text Subject placeholder: type(scope): TICKET-123 Subject text Commit message: type(scope): TICKET-124 type(scope): TICKET-123 Subject text

As it is now Previous message: type(scope): TICKET-123 Subject text Subject placeholder: Subject text Commit message: type(scope): TICKET-124 Subject text

[storageddd]

@leonardoanalista, can you review changes, please?