* IntWidgetHandler::CreateUI now registers and sends editingFinished event
* add tests for int spin control valueChanged and editingFinished signals
Signed-off-by: amzn-sean <75276488+amzn-sean@users.noreply.github.com>
* Final update copyright headers to reference license files at the repo root
Signed-off-by: spham <spham@amazon.com>
* Fix copyright validator unit tests to support the stale O3DE header scenario
Signed-off-by: spham <spham@amazon.com>