openharmony-standard: Replace prebuilt packing-tool binaries

This replaces the use of prebuilt packing tools with the ones built from
the recipe packing-tool-native.

The patch for the OpenHarmony build repository fixes the path to the
packing tool jar files and now points to the ones in the recipe native
sysroot.

Signed-off-by: Thierry Escande <thierry.escande@huawei.com>