superbuild: update to only apply the btn qt5 patch for 5.10+
@cory-quammen This isn't needed for the binaries, but this should be included in the RC3 tag here.
Cc: @wascott
Backport: release
@cory-quammen This isn't needed for the binaries, but this should be included in the RC3 tag here.
Cc: @wascott
Backport: release