Lts/Services: finalize Qt6/C++17 migration cleanup
Remove deprecated Qt5 patterns remaining in Services:
- Replace remaining SIGNAL/SLOT string syntax with function pointer syntax
(NmeaManagement/socket_handler.cpp, AudioVideoManagement/ModuleTests/mvs_tests.cpp)
- Remove Qt::UniqueConnection (deprecated in Qt6, default behavior) from
19 files across AES, CES plugins, and cross-services (47 occurrences)
- Remove umbrella #include <QtCore> from fire_automaton.h and
aes_test_fire_automaton.h (specific includes suffice)
25 files changed, 74 insertions(+), 81 deletions(-)