bug setting CCPP_VERBOSITY=2

[gold2718]

Description

Setting -DCCPP_VERBOSITY=n for n > 1 results in an invalid ccpp_capgen string

Steps to Reproduce

2025-06-03-dev-6

Please provide detailed steps for reproducing the issue.

1. Invoke cmake from the top of the CCPP framework (so that include(cmake/ccpp_capgen.cmake) is executed).
2. Invoke cmake with the added argument -DCCPP_VERBOSITY=2
3. see the bug...

[gold2718]

Fixed by #675