Write the dirty block index and block-file entries to the database.
Declared in <node/blockstorage.h>
[[requires_capability(0x7fbc8f17ab58), requires_capability(0x7fbca3f04088), requires_capability(0x7fbcace162d8), requires_capability(0x7fbca6c57f48), requires_capability(0x7fbcad35f6e8), requires_capability(0x7fbc9fba14a8)]]
void
WriteBlockIndexDB();