CMake: Fix qt6_extract_metatypes json file generation rule

Change the copying of
  ${CMAKE_CURRENT_BINARY_DIR}/${target}_metatypes.json
to
  ${prefix}/lib/metatypes/${target}_metatypes.json
to happen as part of the command generating the file, rather
than copying the file as part of a separate custom target or
POST_BUILD event.

This ensures that the custom commands in qt6_qml_type_registration
that use those files as dependencies will cause them to be
generated before the qml type registration happens, thus eliminating
errors like

Error 5 while parsing
 qtbase/lib/metatypes/qt6quick_metatypes.json: illegal value

Fixes: QTBUG-94942
Change-Id: Idddd73786d1a622984965c60ac9b4c3bc2c13ab5
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
(cherry picked from commit bcca14a1933de9f188950a9a2d3a450a0772d479)
Reviewed-by: Craig Scott <craig.scott@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

0 files changed, 0 insertions, 0 deletions