QQuickVTKInteractorAdapter: support Qt 5.9
The used signature is new in Qt 5.12. Since it's such a small change, preserve 5.9 compatibility.
Backport: release
Backport: paraview/release
System updates will be applied on May 28rd between 0900 AM and 1200 PM, EDT (UTC-0400). There will be a longer than normal downtime as the host system needs to be rebooted too.
The used signature is new in Qt 5.12. Since it's such a small change, preserve 5.9 compatibility.
Backport: release
Backport: paraview/release