Write the dirty block index and block-file entries to the database.
Declared in <node/blockstorage.h>
[[requires_capability(0x7f95130c8dc8), requires_capability(0x7f950163c0b8), requires_capability(0x7f95241d90a8), requires_capability(0x7f951f3303a8), requires_capability(0x7f950b9c2368), requires_capability(0x7f95175c4ab8)]]
void
WriteBlockIndexDB();