PRODUCT_TREBLE_LINKER_NAMESPACES must be true for BOARD_VNDK_VERSION

If PRODUCT_TREBLE_LINKER_NAMESPACES is not true when
BOARD_VNDK_VERSION is defined, report a build error.
To enable VNDK, linker namespace must be configured.

Bug: 72704254
Test: Try to build with one of them is missing
Change-Id: I804704e2f48fa44c8f998183508741d5cc40e4ce