feat: Improve safety of get_entry function

- Wrap child access in unsafe block to prevent potential data races.

lib/vfs/vfsourdb/vfsourdb.v

@@ -171,7 +171,9 @@ fn (mut self OurDBVFS) get_entry(path string) !ourdb_fs.FSEntry {
 			if child.metadata.name == parts[i] {
 				match child {
 					ourdb_fs.Directory {
-						current = child
+						unsafe {
+							current = child
+						}
 						found = true
 						break
 					}