test: improve dbfs tests

- Remove a placeholder panic in `dbfs_test.v`.
- Improve `namedb_test.v` by using `get_from_id` to
  retrieve public keys by ID and then using `get` to
  retrieve the data associated with the public key.  This
  better reflects the intended usage and clarifies the test.

Co-authored-by: supermario <mariobassem12@gmail.com>

lib/data/dbfs/dbfs_test.v

@@ -35,8 +35,6 @@ fn test_dbfs3() {
 		withkeys:   true
 		keyshashed: true
 	)!
-
-	panic('need other test')
 }
 
 fn dotest(mut db DB, mut dbcollection DBCollection) ! {

lib/data/dbfs/namedb_test.v

@@ -44,8 +44,8 @@ fn test_dbname1() {
 	// Retrieve public keys using their unique IDs
 	console.print_debug('retrieve starts')
 	for i2, myid in ids {
-		retrieved_pubkey, data := ndb.get(myid)!
-		myid_found, data_found := ndb.getdata(retrieved_pubkey)!
+		retrieved_pubkey, data := ndb.get_from_id(myid)!
+		myid_found, data_found := ndb.get(retrieved_pubkey)!
 		assert myid_found == myid
 		assert data_found == data
 		tc := test_cases[i2] or {