tst_qtjson: add missing test data for Android

Android needs the test data enumerated in cmake, so it can be packaged
with the app. The whole invalidBinaryData/ subdir was missing.

Amends qtbase/bfaa8925d5cc0a59cec3f747a8d982ca819f026b (5.6), which
added the files, but not to (then) json.qrc/TESTDATA.

This means this test has never checked anything on Android...

Pick-to: 6.12 6.11 6.8 6.5 5.15
Change-Id: I4defd9637c3968f285f540982db1537b5121c74d
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>