qmltyperegistrar: Do not omit change signals from qmltypes files

qmltyperegistrar used to omit change signals from qmltype files if they
had neither a version nor arguments.

This does however cause issues with the semantic analysis of signal
handlers, who in this case would not find the matching signal. Instead
of adding additional logic in qmllint and any other place which might
need that information, we now simply write out those signals, too.

Pick-to: 6.1
Fixes: QTBUG-92372
Change-Id: Iaa6137c5d45f94e4874dc285e23a24f9c8319bb6
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

0 files changed, 0 insertions, 0 deletions